210+ Coffee Terms | Complete Coffee Glossary And Guide to Coffee Lingo

Welcome to our comprehensive guide to all things coffee! Whether you're a seasoned coffee aficionado or just beginning your journey into the world of specialty brews, having a solid understanding of coffee terminology can enhance your appreciation of this beloved beverage.

In this post, we've curated the ultimate coffee glossary, featuring over 210+ terms that cover everything from bean varieties and brewing methods to industry jargon and cultural references. Whether you're curious about the difference between Arabica and Robusta, or you want to explore the intricacies of espresso extraction, this glossary has you covered. So grab your favorite mug, settle in, and let's dive into the rich and flavorful world of coffee!


Coffee Beans and Quality Factors

Arabica

Arabica coffee refers to one of the two primary species of coffee plants used for commercial coffee production, the other being Robusta. Arabica coffee (Coffea arabica) is widely considered to produce higher quality beans with more nuanced flavours compared to Robusta. Arabica plants are typically grown at higher altitudes, usually above 2000 feet, in tropical and subtropical regions. The beans have a smoother, sweeter taste with notes that can range from fruity and floral to nutty and chocolatey, depending on factors such as growing conditions, processing methods, and roast levels. Arabica coffee accounts for the majority of the world's coffee production and is favoured by specialty coffee enthusiasts for its complexity and depth of flavour.

Beans

Coffee beans are the seeds found within the fruit of the coffee plant, harvested, processed, and roasted to produce coffee. Each cherry typically contains two seeds, which are extracted and processed to reveal green coffee beans. Roasting transforms these beans into the familiar brown coffee beans we know, ready for grinding and brewing. The flavour, aroma, and characteristics of the resulting coffee depend on factors such as bean variety, growing conditions, processing methods, and roast level.

Berry Borer

The Coffee Berry Borer (CBB) is a tiny beetle that poses a significant threat to coffee crops worldwide. Scientifically known as Hypothenemus hampei, it burrows into coffee berries, laying its eggs inside the coffee beans. As the larvae hatch, they feed on the coffee beans, causing damage and reducing the quality and yield of the harvest. CBB infestations can devastate coffee plantations if left unchecked, leading to substantial economic losses for coffee farmers. Effective pest management strategies, including proper sanitation practices and the use of natural predators or pesticides, are crucial in controlling the spread of the Coffee Berry Borer and protecting coffee crops.

Chalazae

Cord-like structures that anchor the coffee seed (bean) to the fruit's inner wall. They provide support and nutrients to the developing seed.

Cherry

A coffee cherry is the fruit of the coffee plant (Coffea). It is a small, round, berry-like fruit that grows on coffee trees in tropical and subtropical regions. The coffee cherry typically consists of an outer skin, a layer of pulp, a slimy layer called mucilage, and two coffee beans nestled inside. Coffee cherries start as green when unripe and turn red or yellow when ripe, depending on the variety. When harvested, the coffee cherries are processed to remove the outer layers and extract the coffee beans, which are then dried, roasted, and ground to produce the beverage we know as coffee. The coffee cherry itself can also be used to make cascara, a tea-like beverage, or for other culinary purposes.

Coffee Seed

A coffee cherry is the fruit of the coffee plant (Coffea). It is a small, round, berry-like fruit that grows on coffee trees in tropical and subtropical regions. The coffee cherry typically consists of an outer skin, a layer of pulp, a slimy layer called mucilage, and two coffee beans nestled inside. Coffee cherries start as green when unripe and turn red or yellow when ripe, depending on the variety. When harvested, the coffee cherries are processed to remove the outer layers and extract the coffee beans, which are then dried, roasted, and ground to produce the beverage we know as coffee. The coffee cherry itself can also be used to make cascara, a tea-like beverage, or for other culinary purposes.

Endosperm

A coffee cherry is the fruit of the coffee plant (Coffea). It is a small, round, berry-like fruit that grows on coffee trees in tropical and subtropical regions. The coffee cherry typically consists of an outer skin, a layer of pulp, a slimy layer called mucilage, and two coffee beans nestled inside. Coffee cherries start as green when unripe and turn red or yellow when ripe, depending on the variety. When harvested, the coffee cherries are processed to remove the outer layers and extract the coffee beans, which are then dried, roasted, and ground to produce the beverage we know as coffee. The coffee cherry itself can also be used to make cascara, a tea-like beverage, or for other culinary purposes.

Gesha

Gesha, sometimes spelled "Geisha," refers to a prized variety of Arabica coffee that is renowned for its exceptional quality and unique flavour profile. The Gesha variety originated in Ethiopia but gained prominence when it was cultivated in Panama, particularly in the Boquete region. Gesha coffee trees are known for their elongated leaves and relatively low yield, but they produce coffee beans with exquisite floral and tea-like aromas, delicate acidity, and complex flavours. Gesha coffee is often characterized by notes of jasmine, bergamot, tropical fruits, and sometimes a subtle sweetness reminiscent of honey or brown sugar. Due to its exceptional quality and limited availability, Gesha coffee is highly sought after and commands premium prices in the specialty coffee market. It is often considered a luxury coffee and is celebrated for its unique and memorable taste experience.

Grades

In coffee, "grades" are classifications used to categorize beans based on criteria like size, shape, density, and quality. Globally, the Specialty Coffee Association (SCA) grading scale is widely used, with beans scoring 80 points or above considered specialty grade, denoting high quality and distinctive flavours. Additionally, beans may be sorted by size, such as "supremo" or "AA," reflecting larger bean sizes. Grading systems help assess coffee quality, facilitate trade, and ensure consistency, with higher-grade coffees often commanding higher prices due to their superior taste and characteristics.

Green Beans

A coffee cherry is the fruit of the coffee plant (Coffea). It is a small, round, berry-like fruit that grows on coffee trees in tropical and subtropical regions. The coffee cherry typically consists of an outer skin, a layer of pulp, a slimy layer called mucilage, and two coffee beans nestled inside. Coffee cherries start as green when unripe and turn red or yellow when ripe, depending on the variety. When harvested, the coffee cherries are processed to remove the outer layers and extract the coffee beans, which are then dried, roasted, and ground to produce the beverage we know as coffee. The coffee cherry itself can also be used to make cascara, a tea-like beverage, or for other culinary purposes.

Grounds

Coffee grounds refer to the remnants of coffee beans after they have been ground into smaller particles. These particles are typically used in brewing coffee. Coffee grounds can vary in size, depending on the grind setting used, and are commonly categorized into coarse, medium, or fine grinds, depending on the brewing method. Coarser grounds are typically used for methods like French press, while finer grounds are used for espresso. Once used in brewing, coffee grounds are usually discarded or used for other purposes such as composting or skincare.

Harvest

Harvest in coffee refers to the process of gathering ripe coffee cherries from coffee trees. The harvest typically occurs once or twice a year, depending on the coffee-growing region and the variety of coffee being cultivated. Coffee cherries are picked by hand or using mechanical harvesters, depending on the terrain, accessibility, and labour availability. During the harvest, only the ripe cherries are selected, as they contain the optimal sugar content and flavour for producing high-quality coffee. After harvesting, the coffee cherries undergo further processing to extract the coffee beans inside, which are then dried, milled, and sorted before being roasted and brewed into coffee. The harvest season is a crucial time for coffee farmers, as it determines the quality and quantity of coffee produced for the year, and it often involves intensive labour and coordination to ensure a successful harvest.

Micro Lots

Micro lots in coffee refer to small, distinct batches of coffee beans that are harvested from specific sections or individual farms within a larger coffee estate. These lots are often carefully cultivated, processed, and separated to highlight unique flavour profiles and characteristics inherent to a particular plot of land or specific varietals. Micro lots are typically identified and managed separately throughout the coffee production process, from cultivation to processing and drying, to preserve their individual qualities. They are often associated with specialty coffee, where the focus is on quality, traceability, and showcasing the diversity of coffee flavours. Due to their limited production and unique attributes, micro lots are highly sought after by coffee enthusiasts and often command premium prices in the market. They offer consumers the opportunity to experience the distinct flavours and nuances associated with specific coffee origins and growing conditions.

Mucilage

A sticky, sugary substance that surrounds the coffee seeds within the coffee cherry. It is located beneath the pulp and helps protect the seeds during development.

Origin

In coffee, "origin" refers to the specific geographic region or country where the coffee beans were grown and harvested. It encompasses factors such as the altitude, climate, soil composition, and topography of the region, all of which contribute to the unique flavour profile and characteristics of the coffee. The origin of a coffee is an essential aspect of its identity and often serves as a key indicator of its quality and flavour profile. Coffee enthusiasts and professionals value the distinct flavours and nuances associated with different origins and may seek out coffees from specific regions or countries known for producing exceptional beans.

Parchment

A thin, papery layer that surrounds the coffee seeds (beans) within the coffee cherry. It is located beneath the mucilage and provides additional protection to the seeds.

Pericarp

The collective term for the outer layers of the coffee cherry, including the pulp (exocarp) and the inner layers surrounding the seeds.

Pulp

The outer layer of the coffee cherry, also known as the exocarp. It is typically thin and red when ripe, covering the inner layers of the fruit.

Ripeness

Ripeness in coffee refers to the stage at which coffee cherries are fully mature and ready for harvest. Coffee cherries undergo several stages of ripening, starting as green, unripe cherries and progressing through various colour changes as they ripen. When coffee cherries reach full ripeness, they typically exhibit vibrant colours such as red, yellow, or sometimes purple, depending on the coffee variety. At this stage, the cherries are plump and firm, with a slightly soft texture. The ripeness of coffee cherries is crucial for determining the quality and flavour of the beans inside. Overly ripe or underripe cherries can negatively impact the flavour and quality of the coffee beans, resulting in undesirable flavours or defects in the final cup of coffee. Harvesting coffee cherries at the optimal level of ripeness is essential for producing high-quality coffee with desirable flavour characteristics.

Robusta

Robusta coffee refers to a species of coffee plant known scientifically as Coffea canephora. It is one of the two primary species of coffee cultivated for commercial production, the other being Arabica (Coffea arabica). Robusta coffee is characterized by its hardy nature, as it is more resistant to pests and diseases and can thrive in lower altitudes and warmer climates compared to Arabica coffee. Robusta beans typically have a stronger, more bitter flavour and higher caffeine content than Arabica beans. They are often described as having a full-bodied and earthy taste with nutty or woody undertones. Robusta beans are commonly used in espresso blends and instant coffee due to their lower cost and higher caffeine content, but they are generally considered to be of lower quality than Arabica beans. Despite this, robusta coffee plays an important role in the global coffee industry, particularly in regions where Arabica cultivation is challenging.

Seed Coat (Testa)

The outer protective layer of the coffee seed (bean). It is a thin, papery covering that helps protect the endosperm during development.

Silver Skin

The thin, silvery membrane that covers the coffee seeds (beans) within the parchment layer. It is removed during the coffee processing stage to reveal the green coffee beans.

SL-28 / SL-34

SL-28 and SL-34 are cultivars of Arabica coffee plants that are renowned for their exceptional quality and unique flavor profiles. They were developed by Scott Agricultural Laboratories in Kenya during the mid-20th century as part of efforts to improve coffee production in the region.

SL-28 is particularly esteemed for its ability to produce high-quality coffee with a vibrant acidity, bold flavor, and notable sweetness. It is known for its resilience against diseases such as Coffee Berry Disease and Leaf Rust, making it a popular choice among coffee farmers in Kenya and other regions with similar climates.

SL-34, on the other hand, is recognized for its excellent cup quality, balanced acidity, and citrus-like flavor notes. It is also prized for its adaptability to various growing conditions and its resistance to pests and diseases.

Both SL-28 and SL-34 are primarily cultivated in Kenya but have also been planted in other coffee-producing regions around the world, where they continue to be valued for their exceptional cup characteristics. These cultivars have played a significant role in shaping the specialty coffee industry and are highly sought after by coffee enthusiasts for their distinctive flavors and consistent quality.

Terroir

Terroir in coffee refers to the unique environmental factors and conditions of a specific geographic region that influence the flavour, aroma, and quality of the coffee beans grown there. These factors include altitude, climate, soil composition, sunlight exposure, rainfall patterns, and topography. Just like in wine, where terroir contributes to the distinctive characteristics of grapes grown in different regions, terroir plays a significant role in shaping the flavour profile of coffee beans. For example, coffee beans grown at higher altitudes tend to have a more complex flavour profile with brighter acidity and floral notes, while beans from lower altitudes may exhibit deeper, earthier flavours. Understanding and appreciating terroir allows coffee enthusiasts, roasters, and buyers to recognize and value the unique qualities of coffees from different regions, fostering a deeper appreciation for the diversity and complexity of the coffee world.

Varietal

A specific cultivar or variety of coffee plant, distinguished by unique genetic characteristics that influence flavor, aroma, and growing conditions. Examples of coffee varietals include Bourbon, Typica, Gesha, and SL28.


Coffee Brewing Methods

Aeropress

The Aeropress is a compact and versatile coffee brewing device known for its simplicity and ability to produce smooth and flavorful coffee quickly. It consists of two main parts: a chamber and a plunger, along with a filter. To brew coffee with an Aeropress, ground coffee is placed in the chamber, hot water is added, and the mixture is stirred before being pressed through the filter by the plunger. This method allows for full immersion brewing, similar to a French press, but with the added benefit of pressure, resulting in a clean and rich cup of coffee. The Aeropress is favoured by coffee enthusiasts for its portability and ease of use, making it an ideal choice for home brewing, travel, or outdoor adventures.

Chemex

Chemex is a pour-over coffee brewing device invented by German chemist Peter Schlumbohm in 1941. It consists of a glass or borosilicate vessel with an hourglass shape, a narrow neck, and a wooden or plastic collar tied with a leather cord. The Chemex uses specially designed proprietary filters, typically made of bonded paper, which are thicker than standard coffee filters. To brew coffee using a Chemex, ground coffee is placed in the filter, and hot water is poured over it in a controlled manner. The coffee then drips through the filter into the bottom of the vessel, resulting in a clean and flavorful cup of coffee. The Chemex is prized for its elegant design and ability to produce a bright, clean, and sediment-free brew, making it a favourite among coffee enthusiasts and aficionados.

Cold Brew

Cold brew is a method of brewing coffee that involves steeping coarse coffee grounds in cold water for an extended period, typically 12 to 24 hours. The process is done without any heat, which distinguishes it from traditional hot brewing methods. During this steeping period, the coffee grounds slowly infuse their flavours into the water, resulting in a smooth, rich, and concentrated coffee concentrate. After steeping, the coffee is strained to remove the grounds, and the resulting cold brew concentrate can be diluted with water or milk and served over ice. Cold brew is known for its lower acidity and smoother, less bitter taste compared to hot-brewed coffee. It has gained popularity for its refreshing qualities, especially during warmer months, and can be enjoyed black or with added sweeteners, flavourings, or milk.

Drip

In coffee, drip typically refers to a method of brewing coffee where hot water is poured over coffee grounds contained in a filter, allowing the water to drip through and extract the flavours and oils from the coffee. This method is commonly used in drip coffee makers, where water is heated and then dripped over the grounds in a controlled manner, usually through a showerhead or similar mechanism. As the water passes through the grounds, it absorbs the coffee's flavours and oils, resulting in a brewed coffee that collects in a carafe or pot below. Drip brewing is known for its simplicity, consistency, and ability to produce large quantities of coffee quickly, making it a popular choice for both home and commercial use.

Espresso

Espresso is a concentrated coffee beverage made by forcing hot water through finely ground coffee beans at high pressure. It is characterized by its strong flavour, rich body, and creamy texture, as well as a layer of golden foam called crema that forms on top. Espresso is brewed quickly, typically in about 25-30 seconds, resulting in a small serving size of about 1-2 ounces. It serves as the base for a variety of coffee drinks such as lattes, cappuccinos, and macchiatos, and is enjoyed both on its own and as an ingredient in many coffee recipes.

French Press

French press, also known as a press pot or plunger pot, is a type of coffee brewing device. It consists of a cylindrical glass or metal container with a plunger and a metal mesh filter. To brew coffee with a French press, coarsely ground coffee is added to the container, followed by hot water. After allowing the coffee to steep for a few minutes, the plunger is slowly pressed down, trapping the coffee grounds beneath the filter and separating them from the brewed coffee. This method allows for direct contact between the coffee grounds and water, resulting in a full-bodied and flavourful cup of coffee with a rich and robust taste. French presses are popular among coffee enthusiasts for their simplicity, versatility, and ability to produce coffee with a distinctive character.

Japanese Iced Coffee

Japanese iced coffee is a brewing method that involves brewing hot coffee directly onto ice, resulting in a quickly chilled and refreshing iced coffee. To make Japanese iced coffee, hot water is poured over freshly ground coffee grounds, typically using a pour-over method such as Hario V60 or Chemex, directly onto a bed of ice in the serving vessel. As the hot coffee drips onto the ice, it rapidly cools, locking in the flavours and aromas of the freshly brewed coffee. This method preserves the delicate flavours and acidity of the coffee, resulting in a bright and flavorful iced coffee with a clean finish. Japanese iced coffee is favoured for its convenience, speed, and ability to highlight the nuanced flavours of specialty coffee beans.

Pour-over

Pour-over coffee is a manual brewing method that involves pouring hot water over coffee grounds in a filter, allowing the water to extract the flavours and oils from the grounds as it passes through and drips into a vessel below. To make pour-over coffee, freshly ground coffee is placed in a cone-shaped filter (such as a Hario V60 or Chemex) set atop a mug or carafe. Hot water, typically just off the boil, is then poured slowly and controlled over the coffee grounds, starting from the center and moving outwards in a circular motion. This process allows for precise control over factors such as water temperature, flow rate, and saturation, resulting in a well-extracted and flavorful cup of coffee. Pour-over coffee is valued for its clean, bright flavours, clarity, and ability to highlight the unique characteristics of different coffee beans. It's a popular choice among coffee enthusiasts who appreciate the ritual and craft of manual brewing.

Stovetop Espresso

Stovetop espresso, also known as a moka pot or stovetop coffee maker, is a brewing device used to make espresso-style coffee on a stovetop. It consists of three main parts: a bottom chamber for water, a middle chamber for ground coffee, and a top chamber where the brewed coffee collects. To brew coffee using a stovetop espresso maker, water is added to the bottom chamber, ground coffee is placed in the middle chamber, and the device is assembled and placed on a stovetop burner. As the water heats up, pressure builds up in the bottom chamber, forcing the hot water through the coffee grounds and up into the top chamber, where it collects as brewed coffee. Stovetop espresso produces a strong and concentrated coffee with characteristics similar to espresso, but it is not true espresso as it doesn't use the high pressure of an espresso machine. Nonetheless, it's a popular and convenient method for making espresso-style coffee at home without the need for expensive equipment.

Turkish

Turkish coffee is a traditional method of preparing coffee that originated in the Middle East. It involves finely grinding coffee beans to a powder-like consistency and then brewing them directly in water, usually in a small, special pot called a cezve or ibrik. The coffee is typically simmered, not boiled, allowing the grounds to settle at the bottom of the pot. Turkish coffee is known for its strong flavour, rich aroma, and thick, frothy foam on top. It is often served unfiltered, in small cups, and is enjoyed for its intense and robust taste. Additionally, Turkish coffee has cultural significance in many countries where it is a symbol of hospitality and socializing.


Coffee Brewing Parameters

Brewing Pressure

Brewing pressure in coffee refers to the force exerted on the coffee grounds during the brewing process, particularly in espresso extraction. It's a crucial factor in extracting flavours and aromas from the coffee grounds. In espresso machines, water is forced through a compacted bed of finely ground coffee at high pressure, typically around 9 bars (9 times the atmospheric pressure at sea level), though some machines may operate at slightly different pressures. This pressure is essential for creating the characteristic flavours, crema (the golden foam on top of espresso), and body of espresso. Adjusting brewing pressure can influence the extraction rate and flavour profile of the espresso, allowing baristas to fine-tune the brewing process to achieve desired results.

Brewing Ratio

The brewing ratio in coffee refers to the relationship between the amount of coffee grounds used and the volume of water used during the brewing process. It is typically expressed as a ratio, such as 1:16, which means one part of coffee grounds to sixteen parts of water. This ratio determines the strength and flavour intensity of the resulting coffee. A higher ratio will produce a stronger and more concentrated brew, while a lower ratio will result in a milder cup. Brewing ratios are often adjusted based on personal preference, coffee type, and brewing method to achieve the desired taste and strength of coffee.

Brewing Temperature

The brewing temperature in coffee refers to the temperature of the water used during the brewing process. It plays a critical role in extracting flavours and aromas from the coffee grounds. The ideal brewing temperature varies depending on the brewing method and coffee type but generally falls between 195°F to 205°F (90°C to 96°C). Water that is too hot can lead to over-extraction, resulting in bitter and harsh flavours, while water that is too cool may under-extract, producing a weak and flat-tasting brew. Controlling brewing temperature is essential for achieving the optimal balance of flavours and ensuring a delicious cup of coffee.

Brewing Time

Brewing time in coffee refers to the duration during which coffee grounds are in contact with water during the brewing process. It is a critical factor that influences the extraction of flavours, aromas, and other desirable compounds from the coffee grounds. The brewing time varies depending on the brewing method and the desired strength and flavour profile of the coffee. For example, espresso typically has a short brewing time of around 25-30 seconds, while methods like French press or cold brew require longer brewing times, often several minutes to hours. Monitoring brewing time is essential to achieve optimal extraction and balance in the final cup of coffee. Adjusting brewing time allows for the customization of flavour intensity and other characteristics to suit individual preferences.

Charge Temperature

In the context of coffee roasting, the charge temperature refers to the initial temperature of the roasting drum or chamber at the beginning of the roasting process. It is the temperature at which the green coffee beans are introduced into the roaster for roasting. The charge temperature is a crucial parameter in coffee roasting, as it influences the rate of heat transfer to the beans and ultimately affects the development of flavour, aroma, and colour during the roasting process. Different coffee beans and roast profiles may require different charge temperatures to achieve desired outcomes, making it an essential variable for roasters to monitor and control during the roasting process.

Dilution

Dilution in coffee refers to the process of adding additional water or other liquids to a brewed coffee to adjust its strength or flavour profile. This is commonly done to reduce the intensity of a concentrated coffee brew, such as espresso or cold brew concentrate, by mixing it with water. Dilution can also involve adding milk, cream, or other flavourings to alter the taste and texture of the coffee. The amount of dilution depends on personal preference and desired strength, with some individuals preferring a stronger brew and others opting for a milder or creamier cup. Dilution allows for the customization of coffee to suit individual tastes and preferences.

Extraction

Extraction in coffee refers to the process of dissolving and extracting flavour compounds, oils, and aromas from coffee grounds using hot water during brewing. It is a crucial step in coffee preparation that determines the taste, strength, and overall quality of the brewed coffee. During extraction, hot water interacts with the coffee grounds, extracting soluble compounds such as caffeine, sugars, acids, and various flavour compounds. The goal is to achieve a balanced extraction that brings out the desired flavours and characteristics of the coffee while avoiding over-extraction, which can result in bitter or unpleasant flavours, or under-extraction, which leads to a weak or sour taste. Factors such as water temperature, brewing time, grind size, coffee-to-water ratio, and brewing method all influence the extraction process and ultimately the flavour profile of the brewed coffee. Achieving optimal extraction is essential for producing a delicious and satisfying cup of coffee.

Extraction Yield

Extraction yield in coffee refers to the percentage of soluble compounds extracted from coffee grounds during the brewing process. It is a measure of how efficiently the flavours, oils, and aromas have been extracted from the coffee grounds and dissolved into the brewed coffee. Extraction yield is typically calculated by dividing the mass of dissolved solids extracted from the coffee grounds by the mass of coffee grounds used, then multiplying by 100 to express the result as a percentage. A higher extraction yield indicates that more of the coffee's soluble compounds have been extracted, resulting in a stronger and more flavorful brew, while a lower extraction yield suggests under-extraction, resulting in a weaker and less flavorful cup. Monitoring and adjusting extraction yield is crucial for achieving the desired taste and quality in brewed coffee, and it can be influenced by factors such as grind size, brewing time, water temperature, and coffee-to-water ratio.

Strength

Strength in coffee refers to the concentration of coffee in a brewed beverage. It is often described in terms of the ratio of coffee to water used in the brewing process. A higher coffee-to-water ratio results in a stronger brew, while a lower ratio produces a weaker brew. The strength of coffee can also be influenced by factors such as the type of coffee beans used, the grind size, and the brewing method. A stronger coffee typically has a more intense flavour and higher caffeine content, while a weaker coffee may have a milder taste and lower caffeine concentration. The strength of coffee is subjective and can be adjusted according to personal preference by varying the amount of coffee used during brewing.

Temperature

The temperature in coffee is a crucial factor that greatly influences its flavour, aroma, and overall quality. The ideal brewing temperature varies depending on the brewing method and coffee type but typically falls between 195°F to 205°F (90°C to 96°C). Brewing coffee at too low a temperature can result in under-extraction, yielding a weak and sour flavour, while brewing at too high a temperature can lead to over-extraction, resulting in a bitter taste. Additionally, serving temperature is important, as coffee that is too hot can scald the palate, while coffee that is too cold may lose its aromatic qualities and taste dull. Therefore, controlling and maintaining the right temperature throughout the brewing and serving process is essential for achieving a satisfying and flavorful cup of coffee.

Total Dissolved Solids (TDS)

Coffee TDS stands for Total Dissolved Solids and refers to the concentration of dissolved solids, including coffee compounds like oils, sugars, acids, and caffeine, in a brewed cup of coffee. Measured as a percentage or in parts per million (ppm), TDS provides insight into the strength and extraction of the coffee brew. It is often assessed using a refractometer, which measures the refraction of light passing through the coffee sample. By monitoring TDS, coffee professionals can fine-tune brewing parameters to achieve the desired strength, flavor balance, and consistency in their coffee preparations. TDS is an essential tool in specialty coffee, helping to optimize brewing techniques and ensure quality control in coffee production.

Yield

In the context of coffee, yield refers to the amount of brewed coffee obtained from a particular amount of coffee grounds. It is typically measured in terms of volume, such as ounces or millilitres. Yield is a crucial factor in coffee brewing, as it directly affects the strength and flavour profile of the final cup. The yield is determined by the brewing method, the ratio of coffee grounds to water used, and the extraction process. Achieving the desired yield requires careful measurement and control of various brewing parameters to ensure consistency and quality in the brewed coffee.


Coffee Drinks

Affogato

An affogato is a simple yet indulgent Italian dessert that combines two beloved ingredients: espresso and gelato or ice cream. The word "affogato" translates to "drowned" in Italian, which aptly describes the process of pouring a shot of hot espresso over a scoop of cold gelato or ice cream. As the espresso hits the creamy coldness of the gelato, it melts slightly, creating a delicious contrast of hot and cold temperatures and blending the rich, bold flavours of coffee with the smooth sweetness of the frozen treat. This delightful concoction is often enjoyed as a dessert or a refreshing pick-me-up on a warm day, offering a perfect marriage of coffee and dessert flavours.

Americano

An Americano is a popular espresso-based coffee drink made by diluting a shot or more of espresso with hot water. This results in a beverage similar in strength to drip coffee but with a different flavour profile. Americanos typically have a rich and bold flavour, similar to espresso, but with a smoother and slightly milder taste due to the added water. The name "Americano" is believed to have originated during World War II when American soldiers stationed in Europe diluted espresso with water to create a drink more similar to the coffee they were accustomed to back home. Today, Americanos are enjoyed worldwide and can be customized with additional shots of espresso or flavoured syrups to suit individual preferences.

Cappuccino

A cappuccino is a classic Italian espresso-based coffee drink consisting of equal parts espresso, steamed milk, and milk foam. Typically served in a small cup, the cappuccino offers a perfect balance of rich espresso flavor, creamy milk, and airy foam. To prepare a cappuccino, a shot of espresso is first extracted and poured into the cup, followed by an equal amount of steamed milk, and topped with a layer of milk foam. The result is a luxurious and velvety beverage with a smooth texture and a hint of sweetness from the milk, often enjoyed as a morning pick-me-up or a delightful indulgence any time of day.

Cortado

A cortado is a popular coffee drink that originated in Spain and is also commonly enjoyed in Latin American countries. It consists of equal parts espresso and steamed milk, resulting in a small and balanced coffee beverage. The word "cortado" translates to "cut" in Spanish, which refers to the technique of "cutting" the espresso with a small amount of steamed milk. This drink is typically served in a small glass or cup, and its flavour is characterized by the boldness of the espresso balanced with the creamy texture of the steamed milk. The cortado is known for its smooth and rich flavour profile, making it a favourite choice for coffee enthusiasts who enjoy a well-balanced and satisfying coffee experience.

Decaf

Decaf coffee, short for decaffeinated coffee, is a type of coffee that has had most of its caffeine content removed. Decaf coffee is made from coffee beans that undergo a decaffeination process, typically before they are roasted. There are several methods used to remove caffeine from coffee beans, including solvent-based processes using chemicals like methylene chloride or ethyl acetate, as well as non-solvent methods such as the Swiss Water Process or the carbon dioxide method. These processes remove caffeine while attempting to preserve the flavour compounds that give coffee its characteristic taste. Decaf coffee is popular among individuals who want to enjoy the taste of coffee without the stimulating effects of caffeine, whether due to health reasons, sensitivity to caffeine, or personal preference.

Flat White

A flat white is a popular espresso-based coffee drink that originated in Australia or New Zealand, depending on the source. It's made by pouring microfoam—velvety-textured, finely-textured milk—with a glossy finish over a shot of espresso. The ratio of espresso to milk in a flat white is typically higher than in a latte, resulting in a stronger coffee flavour. The microfoam in a flat white is denser than the frothy milk in a cappuccino, giving it a smoother and creamier texture. The drink is served in a smaller cup compared to a latte, but larger than a traditional espresso cup. The flat white is prized for its balanced and velvety taste, making it a favourite choice for those who enjoy a richer coffee experience without the intensity of a traditional espresso shot.

Latte

Latte is a popular coffee beverage made by combining espresso with steamed milk and a small amount of frothed milk. It is typically served in a large cup or glass. The key components of a latte include one or two shots of espresso, which provide the base flavour and caffeine, and steamed milk, which adds creaminess and texture. A small amount of frothed milk is often added on top to create a layer of foam, adding a decorative touch to the drink. Lattes can be customized with flavoured syrups or toppings such as cinnamon or cocoa powder. The result is a smooth, creamy, and mildly sweet coffee beverage that is enjoyed by many coffee enthusiasts.

Lungo

Lungo in coffee refers to a type of espresso shot that is brewed using more water and has a longer extraction time than a standard espresso shot. The term "lungo" is Italian for "long," and it describes the extended brewing process used to produce this coffee beverage. A lungo typically contains approximately double the volume of water used in a standard espresso shot, resulting in a larger and more diluted coffee with a milder flavour profile. The longer extraction time allows for more of the coffee's flavours and aromas to be extracted, resulting in a beverage that is less intense and more aromatic than a traditional espresso shot. Lungos are often enjoyed by those who prefer a milder coffee experience or who find standard espresso shots too strong.

Macchiato

A macchiato is a type of espresso-based coffee drink that originated in Italy. The word "macchiato" translates to "stained" or "spotted" in Italian, referring to the small amount of milk that is "stained" into the espresso. There are two main types of macchiatos:

  • Espresso Macchiato: In this version, a shot of espresso is "stained" or "marked" with a small amount of steamed milk or milk foam. The milk is added in such a way that it does not significantly alter the flavour or strength of the espresso but provides a slight creaminess and balance.
  • Latte Macchiato: This variation involves a larger amount of steamed milk, typically served in a taller glass, with a small amount of espresso "staining" the milk. The layers are visually distinct, with the espresso floating atop the steamed milk, creating a layered effect.

Both types of macchiatos are known for their bold espresso flavour with a subtle hint of milk, making them a popular choice for those who enjoy a stronger coffee experience with a touch of creaminess.

Mocha

A mocha is a popular coffee beverage that combines espresso, steamed milk, and chocolate. It originated in Italy but has become a beloved choice worldwide. Mochas are typically made by combining a shot of espresso with steamed milk and chocolate syrup or cocoa powder, resulting in a rich and indulgent flavour profile with notes of coffee and chocolate. Some variations may also include whipped cream or a dusting of cocoa powder on top for added decadence. Mochas are known for their smooth and creamy texture, making them a favourite choice for those who enjoy the combination of coffee and chocolate flavours in their drink.

Nitro

Coffee Nitro is a unique beverage made by infusing cold brew coffee with nitrogen gas, typically served on draft from a keg or tap system. The nitrogen infusion creates a creamy and velvety texture, similar to that of a stout beer, with a smooth mouthfeel and cascading bubbles. This process enhances the sensory experience of drinking cold brew coffee, adding a frothy head and imparting a subtle sweetness to the brew. Coffee Nitro has gained popularity for its refreshing and indulgent qualities, making it a sought-after choice for coffee lovers seeking a cold, caffeinated treat with a luxurious twist.

Normale

Normale in coffee refers to a standard or regular espresso shot. It is the typical serving size and extraction time for an espresso shot, resulting in a balanced and well-rounded flavour profile. A normale espresso shot typically contains about 25 to 30 milliliters of brewed coffee and is extracted in approximately 25 to 30 seconds. This standard extraction time allows for the optimal extraction of flavours, oils, and aromas from the coffee grounds, resulting in a flavourful and aromatic espresso with a rich crema on top. Normale espresso shots serve as the base for various espresso-based drinks such as lattes, cappuccinos, and macchiatos, providing a consistent and enjoyable coffee experience.

Red Eye

A Red Eye, also known as a Shot in the Dark, is a coffee drink that combines regular drip coffee with a shot of espresso. This beverage is typically served hot and is known for its strong caffeine content, making it a popular choice for those seeking an extra kick of energy. The addition of espresso to the drip coffee not only enhances the flavour but also increases the caffeine concentration, resulting in a bold and robust coffee experience. Red Eyes is often enjoyed by individuals looking for a powerful pick-me-up to start their day or to keep them going during a long day or night.

Ristretto

A ristretto in coffee refers to a shorter and more concentrated espresso shot. It is made by extracting a smaller volume of water through finely ground coffee beans compared to a standard espresso shot. The reduced water volume results in a more intense and flavourful espresso with a thicker body and a higher concentration of coffee solids. Ristretto shots typically have a sweeter flavour profile and less bitterness than standard espresso shots due to the shorter extraction time. The term "ristretto" is Italian for "restricted" or "limited," reflecting the limited volume of water used in the brewing process. Ristretto shots are often enjoyed by those who prefer a stronger and more robust coffee experience.

Viennese

Coffee Viennese refers to a classic coffee preparation inspired by the traditional coffee culture of Vienna, Austria. It typically consists of a shot of espresso topped with whipped cream and sometimes sprinkled with chocolate shavings or cocoa powder. The combination of rich espresso and creamy whipped cream creates a decadent and indulgent coffee experience with a perfect balance of sweetness and bitterness. Coffee Viennese is often served in elegant coffeehouses and cafés, evoking the sophisticated ambiance of European coffee culture. It is enjoyed as a delightful treat or dessert coffee, offering a luxurious twist on the classic espresso drink.


Coffee Equipment, Tools, and Techniques

Batch Brewer

A batch brewer is a coffee brewing device designed to produce multiple servings of drip coffee simultaneously, making it ideal for serving larger volumes of coffee quickly and consistently. Typically found in coffee shops, offices, and commercial settings, batch brewers automate the brewing process, allowing for precise control over factors such as water temperature, brewing time, and coffee-to-water ratio. Users simply load ground coffee into a designated filter, add water to the reservoir, and initiate the brewing cycle. Batch brewers offer convenience and efficiency, ensuring that batches of coffee are consistently brewed to the desired strength and flavor profile with minimal manual intervention.

Brush In

In the context of coffee, a "brush in" refers to a method used in espresso preparation. This technique involves gently sweeping or brushing the coffee grounds into the portafilter basket using a tool such as a distribution tool or a brush. The goal is to ensure an even distribution of coffee grounds within the portafilter basket before tamping. This helps to promote uniform extraction during the brewing process, leading to a more consistent and balanced espresso shot. Brushing in the coffee grounds can also help prevent channelling, which occurs when water finds paths of least resistance through the coffee puck, resulting in uneven extraction and potentially off-flavours in the final espresso. Overall, the "brush-in" technique is part of the meticulous process of preparing espresso to achieve optimal flavour and quality.

Canister

In the context of coffee, a canister typically refers to a container used for storing coffee beans or ground coffee. These canisters are designed to protect the coffee from external factors that can degrade its quality, such as air, light, moisture, and odours. They often feature airtight seals and opaque or UV-blocking materials to preserve the freshness and flavour of the coffee for a longer period. Canisters come in various sizes and designs, ranging from simple jars to more elaborate vacuum-sealed containers with built-in valves to release carbon dioxide gas emitted by freshly roasted coffee beans. Using a canister helps to maintain the quality of coffee and prolong its shelf life, ensuring a better-tasting cup of coffee with each brew.

Carafe

Carafe refers to a vessel used for serving brewed coffee. It typically has a narrow neck and a wider base to hold the liquid. Carafes come in various materials such as glass, stainless steel, or thermal-insulated materials like double-walled stainless steel. They may feature a handle for easy pouring and often come with a lid to help retain heat and aroma. Carafes are commonly used with drip coffee makers, pour-over setups, and other brewing methods to collect and serve freshly brewed coffee. They are essential for keeping coffee hot and maintaining its flavour until it's ready to be enjoyed.

Conditioner

In the context of coffee, conditioner typically refers to a device or method used to control the environment in which coffee beans are stored. The purpose of a conditioner is to optimize the storage conditions to maintain the freshness, flavour, and quality of the coffee beans. This may involve regulating factors such as temperature, humidity, and airflow to prevent the beans from becoming stale or deteriorating prematurely. Conditioning coffee beans properly can help prolong their shelf life and preserve their desired characteristics until they are ready to be brewed.

Conical burrs

Conical burrs refer to one of the two common types of burrs found in coffee grinders, the other being flat burrs. Conical burrs are shaped like a cone, with one burr fitting inside the other. Coffee beans are fed into the grinder and crushed between these burrs as they rotate against each other. This grinding action produces a more uniform and consistent grind size compared to blade grinders, resulting in better extraction and flavour in the brewed coffee. Conical burr grinders are prized for their ability to produce a wide range of grind sizes, from very fine to coarse, making them versatile for various brewing methods such as espresso, pour-over, and French press. They are favoured by coffee enthusiasts for their precision, reliability, and ability to maintain the freshness and flavour of coffee beans.

Cup Warmer

A cup warmer in coffee is a feature on espresso machines or coffee makers designed to keep cups warm before and after brewing. It typically consists of a flat surface or tray where cups are placed, using either passive insulation or active heating elements to maintain warmth. By pre-warming cups, the warmer helps retain the optimal temperature of the brewed coffee, enhancing its flavour and aroma for a more enjoyable drinking experience. Cup warmers are commonly found in commercial settings like cafes and restaurants, as well as some home espresso machines.

Ditting Machine

A Ditting machine refers to a brand of commercial coffee grinders produced by Ditting AG, a Swiss company specializing in coffee grinding technology. Ditting machines are renowned for their precision engineering, durability, and consistency in grinding coffee beans to a uniform particle size. They are widely used in coffee shops, roasteries, and other commercial settings where high-volume grinding is required. Ditting offers a range of grinder models suited for various applications, including espresso, filter, and bulk grinding. These machines are prized by coffee professionals for their reliability, performance, and ability to produce consistently high-quality ground coffee, which is crucial for achieving excellent extraction and flavor in brewed coffee.

Filter

A coffee filter is a porous material used to separate coffee grounds from brewed coffee during the brewing process. It is typically made from paper or fabric and is placed in a filter holder or basket before adding coffee grounds. As hot water is poured over the grounds, the filter captures the coffee grounds while allowing the brewed coffee to pass through, resulting in a clean and sediment-free cup of coffee. Coffee filters come in various shapes and sizes to fit different brewing equipment, such as drip coffee makers, pour-over cones, and espresso machines. They are disposable and are often discarded after each use, although some reusable filters made from metal or cloth are available for environmentally conscious consumers.

Flat Burrs

Flat burrs refer to one of the two common types of burrs found in coffee grinders, the other being conical burrs. Flat burrs consist of two flat, parallel discs with sharp edges that crush coffee beans as they pass between them. This grinding action produces a consistent and uniform grind size, which is crucial for achieving even extraction and balanced flavour in brewed coffee. Flat burr grinders are valued for their precision and ability to produce a range of grind sizes suitable for various brewing methods, from espresso to French press. They are favoured by coffee enthusiasts and professionals for their reliability, consistency, and ability to preserve the flavour and aroma of coffee beans.

Frother

A frother in coffee refers to a device or attachment used to froth or foam milk for beverages such as cappuccinos, lattes, and macchiatos. It works by introducing air into the milk, creating a creamy and velvety texture. Frothers come in various forms, including handheld frothers, steam wand attachments on espresso machines, and standalone electric milk frothers. They are commonly used in home kitchens and coffee shops to produce the frothed milk required for specialty coffee drinks, adding a luxurious touch to the beverages and enhancing their taste and presentation.

Grinder

Coffee grinder is a kitchen appliance used to grind whole coffee beans into smaller particles suitable for brewing coffee. It typically consists of a motorized unit with blades or burrs that crush and pulverize the coffee beans. Coffee grinders come in various types, including blade grinders, which use rotating blades to chop the beans, and burr grinders, which use abrasive surfaces to grind the beans to a consistent size. Grind size can be adjusted on some models to accommodate different brewing methods, such as espresso, drip coffee, or French press. Coffee grinders are essential for coffee enthusiasts who prefer to use freshly ground coffee for brewing, as it allows for maximum flavour and aroma extraction from the beans.

Grinder Brush

A coffee grinder brush is a tool designed for cleaning coffee grinders. It typically consists of a handle with bristles made from materials such as nylon, horsehair, or natural fibers. The brush is used to remove coffee grounds, oils, and residue that accumulate inside the grinder's grinding chamber and burrs or blades. Regular cleaning with a grinder brush helps maintain the grinder's performance and prevents stale coffee flavors from affecting freshly ground coffee. The brush's bristles are specifically designed to reach tight spaces and crevices within the grinder, ensuring thorough cleaning without damaging the equipment. Coffee grinder brushes are an essential accessory for coffee enthusiasts who want to keep their grinders clean and in optimal condition for producing delicious coffee.

Hopper

In the context of coffee, a hopper is a container or compartment on a coffee grinder or coffee machine that holds the whole coffee beans before they are ground or brewed. Hoppers come in various sizes and designs depending on the specific grinder or machine model. They typically feature a lid or cover to keep the beans fresh and protected from external elements such as moisture and air. The hopper allows users to store a quantity of coffee beans for convenient and continuous grinding or brewing. It's an essential component of coffee equipment, providing easy access to beans while ensuring freshness and efficiency in the coffee-making process.

Kettle

Kettle is a vessel used for heating water to be used in the coffee-making process. Kettles come in various forms, including stovetop kettles, electric kettles, and gooseneck kettles, each with its own advantages and features. Stovetop kettles are placed on a stove burner and heated manually, while electric kettles are powered by electricity and automatically shut off when the water reaches the desired temperature. Gooseneck kettles feature a narrow spout that allows for precise pouring, making them popular for pour-over coffee brewing methods. Kettles are essential for brewing coffee as they provide the hot water needed for extracting the flavours, oils, and aromas from the coffee grounds, ensuring a delicious and satisfying cup of coffee.

Latte Art

Latte art is a creative and skillful technique of pouring steamed milk into a shot of espresso to create decorative patterns or designs on the surface of the coffee. This art form is typically practiced by baristas in coffee shops and has gained popularity among coffee enthusiasts worldwide. Common designs include hearts, rosettas, tulips, and more intricate patterns. Latte art not only enhances the visual appeal of the coffee but also requires precision and control over the milk texture and pouring technique. It adds an aesthetic touch to the coffee-drinking experience, reflecting the craftsmanship and attention to detail of the barista.

Milk Pitcher

A milk pitcher in coffee refers to a small, pitcher-shaped container used for steaming and frothing milk for espresso-based drinks such as lattes, cappuccinos, and macchiatos. Also known as a milk jug or milk frothing pitcher, it typically has a narrow spout for precise pouring and a handle for easy maneuvering. Milk pitchers come in various sizes, materials, and designs to suit different preferences and purposes. They are an essential tool for baristas and coffee enthusiasts who want to create creamy and velvety milk foam to enhance the texture and taste of their coffee beverages.

Saucer

A saucer in coffee refers to a small, usually round dish that accompanies a coffee cup. It is typically placed underneath the coffee cup to catch any drips or spills and to provide a convenient resting place for a spoon or sugar packet. Saucers come in various materials, such as ceramic, porcelain, or glass, and may feature decorative designs or patterns. They are commonly used in coffee service to enhance the presentation of the beverage and to provide a functional and elegant serving solution.

Scale

A coffee scale refers to a precision measuring device used to accurately weigh coffee beans, grounds, or water during the coffee brewing process. These scales are typically equipped with a digital display and can measure weight in grams or ounces. Coffee scales are essential tools for ensuring consistency and precision in coffee brewing, as they allow users to measure the exact amount of coffee beans needed for brewing, monitor the water-to-coffee ratio, and accurately time brewing parameters such as bloom and extraction time. They are commonly used by coffee enthusiasts, baristas, and specialty coffee shops to achieve the desired flavour and strength in brewed coffee.

Siphon

A siphon in coffee refers to a unique brewing device that combines immersion and vacuum principles. It typically consists of two chambers: a lower chamber filled with water and an upper chamber for coffee grounds. Heated water in the lower chamber creates vapor pressure, pushing water into the upper chamber to brew coffee. When removed from heat, the brewed coffee is drawn back down through a vacuum effect. Siphon brewing is known for its theatrical presentation and ability to produce a clean and flavourful cup of coffee.

Slurry

Coffee slurry refers to the mixture of ground coffee and water during the brewing process, particularly in methods such as pour-over, French press, or espresso. This combination allows for the extraction of flavors, oils, and compounds from the coffee grounds, resulting in the creation of the brewed coffee. The consistency and texture of the coffee slurry can vary depending on factors such as grind size, brewing method, and water-to-coffee ratio. Monitoring the slurry's properties is essential for achieving optimal extraction and ensuring a flavorful and balanced cup of coffee.

Thermos

A thermos, also known as a vacuum flask, is a container designed to keep beverages at a consistent temperature for an extended period. It consists of two walls with a vacuum between them, which helps to minimize heat transfer through conduction, convection, and radiation. This insulation effectively retains the temperature of the contents, whether hot or cold, for several hours. In the context of coffee, a thermos is commonly used to keep brewed coffee hot and fresh, making it convenient for travel, commuting, or serving coffee over an extended period without it losing its temperature or flavour.

Timer

A timer in coffee is a tool used to measure the duration of brewing stages, ensuring consistency and precision. It's employed in methods like pour-over, French press, espresso, and drip brewing to control crucial steps such as blooming extraction, and brewing time. By monitoring timing, timers help achieve optimal flavour profiles in brewed coffee. They can be standalone devices, integrated into brewing equipment, or smartphone apps, playing a vital role in maintaining quality and consistency in coffee preparation.

Traveler

A coffee traveler is a large container or thermos used to transport multiple servings of coffee, typically prepared in advance at a coffee shop or café. Designed for convenience and portability, coffee travelers allow customers to purchase bulk quantities of coffee to take with them on the go, whether for meetings, events, or gatherings. These containers are insulated to maintain the temperature of the coffee for an extended period, ensuring that it stays hot and fresh until it is served. Coffee travelers are a popular option for individuals or groups looking to enjoy high-quality coffee outside of the café setting, providing a convenient solution for caffeine needs while away from home.

Water Reservoir

A water reservoir in coffee refers to a container or compartment in a coffee maker or espresso machine that holds the water used for brewing coffee. The size and design of the water reservoir can vary depending on the specific coffee machine model. It may be removable for easy refilling, or it may have a built-in filtration system to improve water quality. The water reservoir is a crucial component of any coffee brewing device as it supplies the water needed for brewing coffee, whether it's a simple drip coffee maker or a sophisticated espresso machine. Maintaining the cleanliness and quality of the water reservoir is important for ensuring the flavour and quality of the brewed coffee.

Whirlpool

A whirlpool in coffee refers to a specific technique used during brewing, particularly in methods like pour-over or French press. It involves creating a circular motion with a utensil or pouring device to agitate the coffee grounds and create a vortex-like movement within the brewing vessel. This motion helps to ensure even extraction of flavours by distributing the water evenly over the coffee grounds, promoting consistent saturation and brewing. The whirlpool technique is aimed at maximizing the extraction of flavours from the coffee grounds, resulting in a more balanced and flavourful cup of coffee.


Coffee Flavour and Aroma

Acidity

Coffee acidity refers to a key component of coffee flavour characterized by its brightness, liveliness, and tanginess, rather than its pH level. It's often described as a desirable quality that adds complexity and vibrancy to the taste profile of a coffee. Acidity can manifest in various forms, such as fruity, citrusy, or wine-like notes, and it plays a crucial role in balancing the overall taste experience. While some may associate acidity with sourness, in specialty coffee, acidity is prized for its pleasant and refreshing qualities, contributing to the nuanced flavour profile of different coffee beans.

Aroma

Coffee aroma refers to the scent or fragrance that emanates from brewed coffee, often described as one of the most captivating aspects of the coffee-drinking experience. It encompasses a wide range of aromatic notes that can vary depending on factors such as bean origin, roast level, and brewing method. Aroma is perceived through the olfactory senses and can evoke a diverse array of sensations, from floral and fruity to nutty and spicy. The aroma of coffee plays a crucial role in shaping our perception of its flavour, as it prepares our senses for the taste experience to come. In specialty coffee, connoisseurs pay close attention to aroma as an indicator of coffee quality and complexity.

Bitterness

Bitterness in coffee refers to a taste sensation characterized by a harsh or unpleasant flavour that is perceived toward the back of the tongue. It is often associated with over-extraction during the brewing process, where compounds such as tannins and caffeine are extracted from the coffee grounds in excessive amounts. While a certain level of bitterness can contribute to the complexity of coffee flavour, an overly bitter brew can overwhelm the palate and detract from the overall enjoyment of the coffee. Achieving a balanced and well-rounded cup of coffee involves careful attention to factors such as grind size, brewing time, and water temperature to minimize bitterness while highlighting other desirable flavour characteristics.

Body

In the realm of coffee, body refers to the tactile sensation or mouthfeel experienced when drinking a cup of coffee. It encompasses the weight, viscosity, and texture of the coffee on the palate, ranging from light and delicate to heavy and full-bodied. Factors such as bean variety, roast level, brewing method, and coffee-to-water ratio can influence the body of the coffee. Coffees with a fuller body often exhibit a thicker and more velvety texture, while those with a lighter body may feel more crisp and refreshing. The body of a coffee is an essential aspect of its overall flavor profile, contributing to the sensory experience and perception of richness and depth in the cup.

Brightness

In coffee tasting, "brightness" refers to a sensory attribute that describes the liveliness or acidity perceived in the flavour profile of a coffee. It is often described as a sharp, crisp, or tangy sensation on the palate, similar to the acidity found in fruits like citrus or berries. Brightness is a desirable quality in many specialty coffees as it adds complexity and dimension to the flavour, balancing out other characteristics such as sweetness and body. It should not be confused with sourness, which can indicate under-extraction or poor-quality beans. Instead, brightness contributes to the overall balance and complexity of a coffee's flavour profile, enhancing its vibrancy and distinctiveness.

Citrus

In coffee, citrus refers to a flavour note or aroma characteristic found in certain coffee beans. When describing coffee, "citrus" refers to the presence of flavours and aromas reminiscent of citrus fruits such as lemon, orange, grapefruit, or tangerine. These flavours can range from subtle hints to more pronounced and tangy notes, adding brightness and acidity to the overall flavour profile of the coffee. Citrus flavours in coffee are often associated with coffees grown at higher elevations and in regions with distinct microclimates, where the beans develop more complex and nuanced flavours. Citrus notes can be detected in both brewed coffee and espresso, contributing to the sensory experience and complexity of the beverage.

Concentration

In coffee, concentration typically refers to the strength or intensity of the brewed coffee. It is determined by the ratio of coffee grounds to water used during the brewing process. A higher concentration means that there is a greater amount of coffee grounds relative to the water, resulting in a stronger and more intense flavour. Conversely, a lower concentration indicates a milder and less intense brew. Concentration can also refer to the amount of dissolved solids, such as coffee oils and compounds, in the brewed coffee. Monitoring and adjusting concentration allows coffee enthusiasts to customize their brews to achieve their desired taste preferences and strength levels.

Crema

Crema is a golden-coloured, creamy layer that forms on top of a freshly brewed shot of espresso. It is created during the espresso extraction process when carbon dioxide gas, oils, and fine coffee particles emulsify and rise to the surface, forming a dense foam. Crema is prized for its rich texture, aromatic aroma, and bittersweet flavour, and it serves as an indicator of a well-prepared espresso shot. A thick and persistent crema is often associated with high-quality espresso and indicates that the coffee beans are freshly roasted and properly ground.

Earthy

In coffee, earthy is a flavour note used to describe a taste reminiscent of soil, earth, or forest floor. It often presents a subtle and grounding flavour, similar to the aroma of freshly turned earth or damp forest. Earthy notes can vary in intensity and may be influenced by factors such as the coffee's origin, processing method, and roast level. Coffees with earthy flavours are often associated with certain regions, such as Sumatra, where wet-hulling processing contributes to the development of these unique characteristics. While some coffee drinkers enjoy the earthy flavour as a complement to other tasting notes, others may find it less desirable depending on personal preference.

Flavour Notes

Flavour notes in coffee refer to the specific tastes and aromas that are discernible when tasting the brewed coffee. These notes can vary widely depending on factors such as the coffee bean variety, growing region, processing method, and roast level. Flavor notes are often described using terms that evoke familiar tastes and aromas, such as fruity, nutty, chocolatey, floral, spicy, or earthy. For example, a coffee might have flavour notes of blueberry, caramel, and cocoa, indicating that the coffee exhibits hints of these flavours when tasted. These flavour notes contribute to the overall complexity and character of the coffee, allowing coffee enthusiasts and professionals to appreciate the unique qualities of different coffees and to articulate their sensory experiences when enjoying a cup.

Flavour Profile

Coffee flavour profile refers to the unique combination of tastes, aromas, and sensory characteristics found in a particular type of coffee. It encompasses a wide range of attributes such as acidity, sweetness, bitterness, body, aroma, and specific flavour notes, which can include fruity, floral, nutty, chocolaty, or spicy qualities, among others. The flavour profile of a coffee is influenced by factors such as the coffee's origin, variety, growing conditions, processing method, and roast level. Coffee professionals often use flavour profiles to describe and evaluate different coffees, helping consumers make informed choices based on their taste preferences. Additionally, understanding a coffee's flavour profile can enhance the appreciation and enjoyment of the coffee-drinking experience.

Floral

In coffee, floral refers to a flavour note or aroma characteristic found in certain coffee beans. When describing coffee, "floral" indicates the presence of flavours and aromas reminiscent of flowers, such as jasmine, rose, or lavender. These delicate and fragrant notes can add complexity and dimension to the overall flavour profile of the coffee. Coffee beans with floral characteristics are often associated with specific origins or varieties, and they are prized for their aromatic qualities and nuanced taste. Floral notes in coffee can vary in intensity, ranging from subtle hints to more pronounced and prominent flavours, contributing to a diverse and enjoyable coffee-drinking experience.

Fragrance

Fragrance in coffee refers to the aroma or scent of the dry, ground coffee beans before they are brewed. It's the initial olfactory impression you experience when you open a bag of coffee or grind fresh beans. Fragrance can vary greatly depending on factors such as the coffee's origin, variety, processing method, and roast level. It often includes a combination of aromas such as floral, fruity, nutty, spicy, or earthy notes. The fragrance is an essential aspect of coffee tasting, as it provides a preview of the flavours that will be present in the brewed coffee. Experienced coffee tasters pay close attention to fragrance as it can offer valuable insights into the coffee's quality and complexity.

Fruity

Fruity in coffee refers to a flavour note or aroma characteristic found in certain coffee beans. When describing coffee, "fruity" indicates the presence of flavours and aromas reminiscent of fruits, such as berries, citrus, tropical fruits, or stone fruits. These fruity notes can range from subtle hints to more pronounced and vibrant flavours, adding a refreshing and vibrant quality to the coffee's taste profile. Fruity flavours in coffee are often associated with specific coffee origins, varieties, and processing methods. They contribute to the overall complexity and enjoyment of the coffee-drinking experience, appealing to those who appreciate the bright and lively characteristics of fruity coffees.

Mouthfeel

Mouthfeel in coffee refers to the tactile sensations or texture experienced in the mouth while drinking coffee. It encompasses the physical sensations such as the thickness, creaminess, smoothness, and viscosity of the coffee as it coats the tongue and palate. Mouthfeel is influenced by various factors including the coffee's roast level, brewing method, bean variety, and even the mineral content of the water used. For example, a coffee with a heavy body might feel thick and syrupy on the tongue, while a coffee with a lighter body might feel lighter and more watery. Mouthfeel is an essential aspect of the overall coffee-tasting experience, contributing to the perception of flavour and quality.

Nutty

Coffee nutty refers to a flavor profile commonly found in certain coffee beans and brews, characterized by the presence of nutty and earthy notes reminiscent of nuts such as almonds, hazelnuts, or pecans. This flavor profile can arise from various factors including the coffee bean variety, roast level, and brewing method. Coffees with a nutty flavor often exhibit a pleasant balance between sweetness and richness, contributing to a smooth and well-rounded taste experience. The nutty notes in coffee add depth and complexity to the flavor profile, appealing to those who enjoy a comforting and familiar taste reminiscent of roasted nuts.

Spicy

Spicy in coffee refers to a flavour profile characterized by warm, aromatic spices such as cinnamon, cloves, nutmeg, or pepper. Coffee beans with a spicy flavour may exhibit notes of these spices in their taste and aroma, contributing to a complex and flavourful cup of coffee. Spicy notes can add depth and warmth to the coffee's profile, creating a pleasant drinking experience. Spicy flavours in coffee are often sought after by enthusiasts who appreciate the richness and complexity they bring to the brew.

Sweetness

Sweetness in coffee refers to one of the key flavour attributes perceived when tasting coffee. It describes the natural sugars present in the coffee beans that impart a pleasant and sugary taste sensation. Sweetness in coffee can vary widely depending on factors such as the coffee bean variety, roast level, and brewing method. It is often described as a desirable quality that balances the coffee's acidity and bitterness, contributing to a more enjoyable and well-rounded flavour profile. Sweetness can manifest as caramel-like, fruity, or chocolatey notes, depending on the specific characteristics of the coffee beans and the roasting process. Achieving a proper balance of sweetness in coffee is considered essential for producing a delicious and satisfying cup of coffee.

Tasting Notes

Tasting notes in coffee refer to the specific flavours, aromas, and other sensory characteristics that are identified and described by tasters during the process of coffee evaluation or cupping. These notes can encompass a wide range of descriptors, such as fruity, floral, nutty, chocolatey, spicy, earthy, or acidic, among others. Tasting notes are used to articulate and communicate the unique qualities and nuances of a particular coffee, providing valuable information to consumers, roasters, and coffee professionals. They help convey the complex flavour profile of the coffee and guide consumers in selecting coffees that align with their preferences. Tasting notes are typically included on coffee packaging or labels, as well as in coffee reviews and descriptions, to inform consumers about the flavour profile of the coffee and enhance their coffee drinking experience.


Coffee Processing Methods

Anaerobic fermentation

Anaerobic fermentation in coffee refers to a processing method where freshly harvested coffee cherries are placed in a sealed container or tank without oxygen. This anaerobic environment encourages the growth of specific microorganisms that ferment the sugars naturally present in the coffee cherries. The absence of oxygen during fermentation creates unique conditions that influence the flavours and characteristics of the resulting coffee beans. Anaerobic fermentation can lead to a wide range of flavour profiles, depending on factors such as fermentation time, temperature, and the specific strains of microorganisms present. Coffee processed using anaerobic fermentation often exhibits complex flavours, vibrant acidity, and distinct aroma profiles, making it sought after by specialty coffee enthusiasts. This processing method requires careful monitoring and expertise to ensure consistent quality and to avoid off-flavours or spoilage.

Carbonic Maceration

A variation of anaerobic fermentation, carbonic maceration involves placing whole cherries in a sealed environment filled with carbon dioxide. This method enhances the natural fermentation process and can lead to complex, fruit-forward flavours in the coffee.

Decaffeination

Decaffeination is the process of removing caffeine from coffee beans to produce decaffeinated coffee. There are several methods used to decaffeinate coffee. Still, they generally involve soaking the green coffee beans in a solvent or using a natural extraction process to remove the caffeine while preserving the flavour compounds. Common decaffeination methods include the Swiss Water Process, which uses water and activated charcoal to remove caffeine, and solvent-based processes using chemicals like ethyl acetate or methylene chloride. Once the caffeine is extracted, the beans are dried, roasted, and processed like regular coffee beans. Decaffeinated coffee allows individuals to enjoy coffee without the stimulating effects of caffeine, making it a popular choice for those who are sensitive to caffeine or prefer to limit their intake.

Dry Mill

A dry mill, also known as a dry processing facility, is a facility where coffee beans are processed after they have been dried to remove the outer layers and prepare them for export. In dry milling, the dried coffee cherries, often referred to as parchment coffee, are brought to the mill and sorted to remove any remaining debris, such as twigs, stones, or defective beans. The parchment coffee is then hulled to remove the dried outer husk, revealing the green coffee beans inside. After hulling, the beans may undergo additional sorting and grading based on size, weight, and visual appearance. Finally, the processed green coffee beans are bagged or packaged for export to roasters or wholesalers. Dry milling is a crucial step in coffee production, as it ensures that the coffee beans are clean, uniform, and ready for roasting while preserving their quality and flavour.

Dry Process

The dry process, or natural process, is a method of processing coffee beans after harvest. In this approach, coffee cherries are dried in the sun on raised beds or patios until the fruit becomes dry and brittle. As the cherries dry, they ferment, imparting fruity and complex flavours to the beans. Though labour-intensive, the dry process is traditional and often yields coffee with a fuller body and pronounced fruitiness, popular among specialty coffee drinkers, especially in regions like Ethiopia and Brazil.

Honey Process

The Coffee Honey Process, also known as the pulped natural process, is a coffee bean processing method that combines elements of both the washed and natural processing methods. In this process, ripe coffee cherries are pulped to remove the outer skin, leaving behind the mucilage—a sticky, honey-like substance that surrounds the beans. The beans are then dried with the mucilage still intact, allowing them to absorb some of the sugars and flavors from the mucilage during the drying process. This imparts unique sweetness and complexity to the beans, resulting in coffee with distinct fruity and floral notes. The Coffee Honey Process is prized for its ability to produce flavorful and aromatic coffees while requiring less water than the washed process.

Mechanical Demucilage Process

In the Mechanical Demucilage Process pulped coffee beans are passed through a mechanical demucilager that uses friction to remove the mucilage layer. This process can result in cleaner beans compared to traditional fermentation, and it is particularly popular in regions where water availability is limited.

Natural Process

Natural process, also known as dry process, is a method of coffee bean processing where ripe coffee cherries are dried intact, without removing the fruit pulp. In this method, freshly harvested cherries are spread out in thin layers on raised beds or on the ground to dry under the sun. As the cherries dry, the fruit pulp naturally ferments and breaks down, imparting unique flavours to the coffee beans. Once fully dried, the cherries are mechanically hulled to remove the dried fruit pulp and reveal the dried coffee beans inside. Natural process coffees are known for their fruity, complex, and often wine-like flavours, as well as their full body and sweetness. This processing method is commonly used in regions with limited access to water for wet processing and is favoured by many specialty coffee enthusiasts for the distinct flavour profiles it produces.

Pulp Natural

Coffee Pulp Natural, also known as the "pulped natural" process, is a coffee bean processing method that falls between the washed and natural processes. In this method, ripe coffee cherries are pulped to remove the outer skin, leaving behind the mucilage—a sticky, honey-like substance that surrounds the beans. Unlike the fully washed process where the mucilage is completely removed, in the pulped natural process, the beans are dried with some mucilage still attached. This results in a coffee with a clean, sweet flavor profile similar to washed coffee, but with added complexity and body from the residual sugars and fruitiness imparted by the mucilage. Coffee Pulp Natural is favored for its ability to highlight the inherent qualities of the coffee beans while adding a touch of sweetness and depth to the cup.

Semi-Washed (Wet-Hulled)

Commonly used in Indonesia, particularly for Sumatran and Sulawesi coffees, the semi-washed process involves pulping the cherries, and then allowing the beans to ferment briefly before washing. The beans are then dried with the parchment layer still attached. This process often produces earthy, full-bodied coffees with low acidity.

Swiss Water Decaffeination

Swiss Water Decaffeination is a method used to remove caffeine from green coffee beans without the use of solvents. In this process, a batch of green coffee beans is soaked in hot water, which dissolves the caffeine and many of the coffee's flavour compounds. The water, now containing both caffeine and flavour compounds, is then passed through activated charcoal filters. These filters, which are specially designed to capture only the caffeine molecules, leave behind the flavour compounds in the water. The resulting solution, known as "flavour-charged water," is used to decaffeinate a new batch of green coffee beans, while the caffeine-free water is discarded. This cycle is repeated until the desired level of decaffeination is achieved. Finally, the decaffeinated coffee beans are dried and ready for roasting. The Swiss Water Decaffeination process is praised for its ability to remove caffeine while preserving the flavour and aroma compounds that contribute to the coffee's taste profile. Additionally, it is considered a more natural and environmentally friendly decaffeination method compared to solvent-based processes.

Washed Process

The washed process, also known as the wet process, is a method of coffee bean processing that involves removing the outer skin and pulp of ripe coffee cherries before drying the beans. In this method, freshly harvested cherries are first pulped to separate the outer skin and fruit pulp from the coffee beans. The beans, still coated with a sticky layer of mucilage, are then fermented in water tanks for a while, typically 12 to 36 hours. During fermentation, naturally occurring enzymes break down the mucilage layer, allowing it to be easily washed away. After fermentation, the beans are thoroughly rinsed and washed to remove any remaining mucilage. Finally, the washed beans are dried, either in the sun on raised beds or mechanically using drying machines. The washed process is favoured for its ability to produce clean, bright, and acidic coffees with pronounced clarity of flavour, making it a popular choice for specialty coffee production.

Wet Mill

A wet mill, also known as a wet mill station or wet processing station, is a facility where freshly harvested coffee cherries are processed to remove the outer skin and pulp before drying the beans. The wet milling process typically involves several steps. First, the ripe cherries are unloaded and sorted to remove any damaged or underripe cherries. Then, the cherries are pulped using a machine that separates the outer skin and fruit pulp from the coffee beans inside. The pulped beans, still coated with a sticky layer of mucilage, are then fermented in water tanks to break down the mucilage layer. After fermentation, the beans are thoroughly washed and rinsed to remove any remaining mucilage. Finally, the washed beans are dried, either in the sun on raised beds or mechanically using drying machines. Wet mills play a crucial role in coffee production, as the wet milling process helps to preserve the quality and flavour of the coffee beans by removing unwanted materials and allowing for controlled fermentation.

Wet Process

The wet process, also called washed process, is a fundamental method used in coffee bean processing. After sorting, the freshly harvested cherries undergo pulping to remove the outer skin and some fruit pulp. Following pulping, the beans are fermented in water tanks to break down the remaining mucilage for 12 to 48 hours. They are then thoroughly washed to eliminate any residual mucilage before being dried on raised beds or mechanical dryers until reaching the desired moisture content. This method is renowned for producing coffees with bright acidity, clean flavours, and distinct characteristics that reflect the origin and varietal of the beans. It is commonly employed in regions with ample water access, emphasizing quality and consistency in coffee production.


Coffee Quality Assessment

Barista League

The Barista League is an organization that hosts competitive and collaborative events aimed at bringing together coffee professionals, enthusiasts, and communities. These events often feature a combination of barista competitions, workshops, and social gatherings, creating opportunities for participants to showcase their skills, learn from each other, and network within the coffee industry. The Barista League events are known for their innovative formats and focus on promoting inclusivity, creativity, and fun in the coffee community. They are held in various locations around the world, attracting participants from all backgrounds and levels of experience. The Barista League serves as a platform for fostering camaraderie and collaboration among coffee enthusiasts while celebrating the craft of coffee making.

Coffee Quality Institute (CQI)

Based in the United States, Coffee Quality Institute (CQI) is a non-profit organization that works globally to improve the quality of coffee and the lives of people who produce it.

Cup of Excellence

The Cup of Excellence (COE) is a prestigious coffee competition and auction program that aims to identify and recognize the highest quality coffees produced in coffee-growing regions around the world. Founded by the Alliance for Coffee Excellence (ACE) in 1999, the Cup of Excellence operates through a rigorous selection process involving blind cuppings by a panel of expert judges. Coffees that score above a certain threshold are awarded the Cup of Excellence designation and are eligible to be sold at auction to international buyers. The Cup of Excellence program is renowned for its transparency, integrity, and promotion of direct relationships between coffee producers and buyers. It has played a significant role in elevating the quality and value of specialty coffee, providing recognition and financial rewards to producers of exceptional coffees. The Cup of Excellence auctions generate excitement and competition among coffee buyers, leading to higher prices for winning coffees and providing additional income for participating coffee producers.

Cupping

The formal evaluation and tasting of coffee, typically done by trained professionals using standardized procedures to assess qualities such as aroma, flavor, acidity, body, and aftertaste.

Fairtrade International

Fairtrade International is an organization that works to promote fair trade practices and better working conditions for producers in developing countries. Fairtrade certification includes standards for coffee quality and sustainability.

International Coffee Organization (ICO)

An intergovernmental organization that brings together exporting and importing governments to tackle challenges facing the world coffee sector through international cooperation.

Q-Grader

A Q-Grader, short for "Quality Grader," is an individual certified by the Coffee Quality Institute (CQI) to evaluate and grade coffee beans based on their sensory characteristics and quality attributes. Q-Graders undergo rigorous training and testing to develop their sensory skills in assessing coffee aroma, flavour, acidity, body, balance, and overall quality. They are trained to identify defects and inconsistencies in coffee beans and to provide objective and consistent evaluations. Q-Graders play a crucial role in the coffee industry, as their assessments help to establish the quality and value of coffee beans, guide purchasing decisions, and ensure consistency in coffee production and trading. They are often employed by coffee importers, exporters, roasters, and certification organizations to evaluate coffee samples and provide quality assurance throughout the coffee supply chain.

Specialty Coffee Association (SCA)

The Specialty Coffee Association (SCA) is a non-profit organization that represents the global specialty coffee community. Founded in 1982, the SCA serves as a leading authority on specialty coffee by providing education, research, and resources to coffee professionals and enthusiasts worldwide. The organization is dedicated to promoting excellence and innovation in all aspects of the specialty coffee industry, including cultivation, processing, roasting, brewing, and consumption. The SCA offers various programs and initiatives, such as professional certification programs, industry standards development, research grants, and events like the Specialty Coffee Expo and World Coffee Championships. Through its extensive network of members, chapters, and affiliates, the SCA works to foster collaboration, knowledge sharing, and advancement within the specialty coffee community, ultimately striving to improve the quality of coffee and the livelihoods of coffee producers worldwide.

Tasting

Tasting in coffee refers to the sensory evaluation of brewed coffee to assess its flavour, aroma, acidity, body, and other characteristics. Coffee tasting, also known as cupping, involves slurping small amounts of coffee from a spoon or cup to aerate it and spread it evenly across the palate, allowing the taster to fully experience its flavours and aromas. During a coffee-tasting session, tasters may evaluate multiple coffees side by side, comparing their qualities and noting any differences. Tasting coffee requires a trained palate and keen sensory perception to identify subtle nuances in flavour, acidity, sweetness, and bitterness. Professional coffee tasters, known as Q graders, are often employed by coffee companies to assess the quality and consistency of coffee beans and blends. Coffee tasting is not only a skill but also an enjoyable and educational experience for coffee enthusiasts seeking to deepen their appreciation and understanding of coffee.

UTZ Certified

UTZ Certified is a program and label for sustainable farming of coffee, cocoa, tea, and hazelnuts. UTZ aims to enable farmers to learn better farming methods, improve working conditions, and take better care of their children and the environment.

World Coffee Research

World Coffee Research (WCR) is a non-profit organization dedicated to collaborative research and development initiatives aimed at improving the sustainability, productivity, and resilience of the coffee sector worldwide. Founded in 2012, WCR works with a global network of partners, including coffee producers, researchers, industry stakeholders, and governments, to address key challenges facing the coffee industry. The organization focuses on various areas of research, including coffee genetics, breeding, agronomy, and climate resilience. WCR's efforts aim to develop new coffee varieties with improved traits, provide technical assistance to coffee producers, promote sustainable farming practices, and support the long-term viability of coffee farming communities. By leveraging scientific expertise and collaborative partnerships, WCR seeks to drive positive change and innovation within the coffee industry, ensuring its continued success and sustainability for future generations.


Coffee Roasting

Batch Roasting

Batch roasting is a method of roasting coffee beans in larger quantities at once, as opposed to roasting them individually or in smaller batches. This process is commonly used by commercial coffee roasters to efficiently handle larger volumes of beans while maintaining consistency in roast profiles. Batch roasting involves loading a predetermined quantity of green coffee beans into a roasting machine, where they are subjected to controlled heat and airflow to achieve the desired roast level. By roasting in batches, roasters can streamline production, optimize workflow, and ensure that each batch of beans is roasted to perfection, resulting in a consistent and high-quality end product.

Dark Roast

Dark roast refers to a style of coffee bean roasting characterized by a longer roasting time and higher temperatures, resulting in beans that are dark brown to nearly black. During the roasting process, the sugars in the beans caramelize, and oils migrate to the surface, creating a shiny appearance. Dark roast coffees typically have a bold and robust flavour profile with pronounced bitter notes and a rich, smoky aroma. The longer roasting process also reduces the acidity of the coffee, resulting in a smoother and heavier-bodied cup. Common descriptors for dark roast coffees include "bold," "intense," "full-bodied," and "roasty." These coffees are popular among those who enjoy strong flavours and prefer a more traditional or classic coffee taste.

End Temp

In coffee roasting, "End Temp" refers to the final temperature that the coffee beans reach at the conclusion of the roasting process. This temperature is typically measured at the core of the coffee beans. The end temperature is a critical parameter as it determines the roast level and the characteristics of the final roasted coffee beans. Different roast levels, from light to dark, are achieved by reaching different end temperatures during the roasting process. Lighter roasts are typically stopped at lower end temperatures, while darker roasts are roasted to higher temperatures. Monitoring and controlling the end temperature allow roasters to achieve consistent roast profiles and desired flavor profiles in the finished coffee beans.

Espresso Blend

An espresso blend is a specific combination of coffee beans crafted to create a well-balanced and flavorful espresso shot. These blends are carefully curated by coffee roasters to achieve a harmonious balance of acidity, sweetness, body, and flavour complexity suitable for espresso brewing. Espresso blends typically consist of beans sourced from different origins and varieties, each contributing unique characteristics to the final cup. Roasters may adjust the blend composition based on factors such as seasonal availability, desired flavour profile, and customer preferences. The goal of an espresso blend is to produce a consistent and high-quality espresso shot with rich crema, balanced flavours, and a pleasing mouthfeel, making it a versatile choice for both traditional espresso and milk-based drinks like lattes and cappuccinos.

Espresso Roast

Espresso roast refers to a specific type of coffee bean roast that is tailored for making espresso. This roast is typically darker than other roasts, such as medium or light roast, but not as dark as a French or Italian roast. Espresso roast beans are roasted to a level where they exhibit a rich and robust flavor profile, with a balance of sweetness, bitterness, and acidity. The roasting process for espresso beans often highlights caramelization of sugars and the development of deep, complex flavors while still retaining some of the bean's inherent characteristics. These beans are specifically chosen and roasted to produce a concentrated, flavorful shot of espresso with a thick crema—a creamy layer on top of the espresso. Espresso roast beans can also be used in other brewing methods, but they are particularly well-suited for espresso due to their flavor profile and extraction properties.

First Crack

In coffee roasting, "First Crack" refers to a critical stage in the roasting process when the coffee beans audibly crack for the first time. This event occurs due to the expansion of moisture and gases inside the beans as they are heated. The cracking sound resembles popcorn popping and signifies that the beans have reached a certain level of roast development. First Crack is an essential milestone for roasters as it marks the transition from light to medium roast profiles. Depending on the desired roast level, roasters may choose to end the roast shortly after First Crack for a lighter roast or continue roasting past this point for a darker roast. The duration and intensity of the First Crack, as well as the subsequent roasting process, significantly influence the flavour, aroma, and characteristics of the finished coffee.

French Roast

French roast in coffee refers to a dark roast level characterized by its deep brown color and shiny surface. During the roasting process, coffee beans are roasted at high temperatures for an extended period, resulting in oils being brought to the surface of the beans. French roast coffee typically has a strong, bold flavour with pronounced smoky and caramelized notes. It may also exhibit bitterness and a reduced acidity compared to lighter roast levels. French roast coffee is often associated with a rich and intense flavour profile, making it popular among those who enjoy strong and robust coffee.

Full City Roast

Full City roast is a coffee bean roast level that falls between medium and dark roast. It is characterized by beans that are roasted to a level where they reach the verge of a second crack, a stage in the roasting process where the beans audibly crack again, indicating they have been roasted to a darker degree. At the Full City roast level, the beans have developed rich flavours and aromas while still retaining some of the bean's inherent characteristics. They typically exhibit a balance of sweetness, acidity, and body, with pronounced caramelization flavours and often a hint of roastiness. Full City roast is popular among coffee enthusiasts who enjoy a robust and flavorful cup of coffee without the intense bitterness or smokiness associated with darker roasts.

Italian Roast

An Italian roast in coffee refers to a dark roast level characterized by its deep brown color and rich, bold flavour profile. During the roasting process, coffee beans are roasted at high temperatures for an extended period, resulting in oils being brought to the surface of the beans. Italian roast coffee typically has a strong, intense flavor with pronounced smoky and caramelized notes, as well as a bittersweet aftertaste. It is often associated with traditional Italian espresso culture and is commonly used in espresso blends for its robust and full-bodied characteristics. Italian roast coffee is preferred by those who enjoy strong and bold coffee flavours, making it a popular choice for espresso-based drinks and dark roast enthusiasts.

Light Roast

Light roast refers to a style of coffee bean roasting where the beans are roasted for a shorter duration and at lower temperatures compared to darker roast levels. Light roast beans typically retain more of their original flavours, acidity, and complexity, as the roasting process doesn't fully develop the sugars and oils within the beans. As a result, light roast coffees often exhibit brighter acidity, floral and fruity flavours, and a lighter body. The beans have a lighter brown color and may even retain some of their greenish hue. Light roast coffees are favoured by those who appreciate the nuanced flavours and delicate characteristics of the beans' origin, as well as the distinctive qualities imparted by the roasting process. They are also known for their higher caffeine content compared to darker roasts.

Maillard Reaction

The Maillard Reaction is a chemical reaction that occurs between amino acids and reducing sugars when exposed to heat. It is responsible for the browning and development of complex flavours and aromas in foods during cooking or roasting processes. In the context of coffee roasting, the Maillard Reaction plays a crucial role in transforming green coffee beans into roasted coffee beans. As the beans are heated during roasting, amino acids and sugars present in the beans undergo a series of complex chemical reactions, resulting in the formation of hundreds of new compounds that contribute to the characteristic flavours, aromas, and colours of the roasted coffee. The Maillard Reaction is a key factor in the development of the rich, caramelized flavours and aromas associated with roasted coffee.

Medium Roast

Medium roast refers to a style of coffee bean roasting where the beans are roasted to a moderate level of darkness, typically between light and dark roast levels. Medium roast beans are roasted for a sufficient duration to develop balanced flavours, yet they retain some of the beans' original characteristics. They have a medium-brown colour and may exhibit slight oiliness on the surface. Medium roast coffees generally have a balanced flavour profile with moderate acidity, body, and sweetness. They often feature a combination of nuanced flavours, including caramel, chocolate, nutty, and fruity notes, depending on the coffee's origin and bean variety. Medium roast coffees are popular among a wide range of coffee drinkers, as they offer a good balance between acidity and richness, making them versatile and suitable for various brewing methods.

Natural Decaffeination

Natural decaffeination is a method of removing caffeine from coffee beans using natural solvents or processes, without the use of synthetic chemicals. One common natural decaffeination method is the Swiss Water Process, where green coffee beans are soaked in hot water to dissolve the caffeine. The resulting solution, called "flavor-charged water," is then passed through activated charcoal filters, which selectively remove the caffeine while preserving the flavour compounds. The decaffeinated beans are then dried and roasted. Another natural method is the carbon dioxide (CO2) process, where CO2 is used to extract the caffeine from the beans. Natural decaffeination methods are favoured by some consumers who prefer to avoid synthetic chemicals in their coffee and appreciate the retention of flavour compounds during the decaffeination process.

Roast

Roast in coffee refers to the process of heating raw coffee beans to develop their flavour, aroma, and colour. During roasting, the beans undergo chemical changes that transform their taste profile, with factors such as roast time and temperature influencing the outcome. Roasting typically takes place in specialized equipment called roasters, which can vary in size and complexity. Coffee beans are roasted to different degrees, ranging from light to dark, each producing distinct flavour profiles. Light roasts tend to preserve the bean's original flavours and acidity, while dark roasts develop rich, bold flavours with caramelized sugars and reduced acidity. Roasting is a crucial step in the coffee production process, as it greatly impacts the taste and quality of the final brewed coffee.

Roast Date

The roast date in coffee refers to the date when the coffee beans were roasted. It is an important piece of information provided by coffee roasters to inform consumers about the freshness of the coffee. The roast date indicates how recently the coffee beans were roasted, allowing consumers to gauge their freshness and flavour potential. Coffee beans are typically at their peak flavour within a certain timeframe after roasting, known as the "freshness window." For most specialty coffees, this window is generally considered to be within a few weeks to a month after roasting. Therefore, knowing the roast date helps consumers ensure they are purchasing coffee that is as fresh as possible, maximizing its flavour and quality when brewed.

Roast Profile

Roast profile refers to the specific parameters and characteristics of the roasting process used to roast coffee beans. It encompasses variables such as the temperature, duration, and airflow applied during roasting, as well as the resulting colour, aroma, and flavour development of the beans. Roast profiles can vary widely depending on the desired outcome, ranging from light to dark roast levels, each with its unique flavour profile and characteristics. Roasters carefully design and adjust roast profiles to achieve the desired balance of acidity, sweetness, body, and flavour intensity in the finished coffee. Monitoring and fine-tuning roast profiles is essential for consistently producing high-quality coffee that meets the preferences of consumers and showcases the unique attributes of the coffee beans.

Roastery

A roastery in coffee refers to a facility where coffee beans are roasted. It is a dedicated space equipped with roasting equipment, such as roasters and cooling trays, where raw coffee beans are transformed through the roasting process to develop their flavour, aroma, and color. Roasteries vary in size and scale, from small, artisanal operations to large commercial facilities. Roasteries often employ skilled roasters who are responsible for selecting and sourcing green coffee beans, developing roast profiles, and overseeing the roasting process to ensure consistency and quality. Roasteries may also offer tasting rooms, retail spaces, or coffee bars where customers can sample and purchase freshly roasted coffee beans or enjoy brewed coffee made from their beans.

Roasting

Roasting in coffee refers to the process of heating green coffee beans to transform them into the flavourful and aromatic beans used for brewing coffee. During roasting, the beans undergo chemical and physical changes that develop their characteristic flavours, aromas, and colours. The roasting process involves applying heat to the beans until they reach a certain temperature, typically between 370°F to 540°F (188°C to 282°C), depending on the desired roast level. As the beans heat up, they undergo several stages, including drying, browning, and caramelization, followed by the development of oils on the bean surface. The duration and temperature of roasting significantly impact the final flavour profile of the coffee, with lighter roasts retaining more of the beans' inherent flavours and acidity, while darker roasts develop richer, bolder flavours with lower acidity. Roasting is a critical step in coffee production, as it plays a significant role in shaping the taste, aroma, and overall quality of the final brewed coffee.

Second Crack

In coffee roasting, "Second Crack" refers to a stage in the roasting process where the coffee beans undergo a second round of audible cracking. Similar to First Crack, this occurs due to the expansion of moisture and gases within the beans as they continue to heat up. Second Crack typically happens at higher temperatures than First Crack and is associated with darker roast levels. The cracking sound is generally more subdued and less distinct than First Crack, resembling the sound of rice krispies or snapping twigs. Second Crack marks the progression from medium to dark roast profiles. At this stage, oils may start to migrate to the surface of the beans, resulting in a shinier appearance. The flavours of coffee roasted past Second Crack are typically more robust and pronounced, with a heavier body and reduced acidity compared to lighter roasts. However, it's worth noting that roasting past Second Crack can also lead to the loss of some nuanced flavours and the development of bitter or burnt notes.


Coffee Trade and Sustainability

Artisan Coffee

Artisan coffee refers to coffee that is crafted with meticulous attention to detail, quality, and authenticity, often produced in small batches by skilled roasters or coffee artisans. Unlike mass-produced coffee, which prioritizes consistency and volume, artisan coffee emphasizes unique flavour profiles, specialty beans, and sustainable practices throughout the production process. Artisan coffee roasters typically source high-quality beans from specific regions or farms, focusing on factors such as bean variety, altitude, and processing methods to highlight the intrinsic flavours of the coffee. The result is a premium coffee experience that celebrates craftsmanship, flavour diversity, and the rich cultural heritage of coffee production.

Blend

A blend in the context of coffee refers to a mixture of two or more different coffee bean varieties, often sourced from different regions or species. Blending is a common practice used by coffee roasters to create unique flavour profiles that balance and complement each other, resulting in a more complex and flavorful cup of coffee. Each component of the blend may contribute specific characteristics such as acidity, body, aroma, and sweetness, which are carefully combined to achieve a desired taste profile. Blends can vary widely in composition and are often crafted to suit specific preferences or purposes, such as espresso blends for a rich and bold flavour or breakfast blends for a smooth and balanced cup.

Carbon Footprint

The total amount of greenhouse gases (primarily carbon dioxide) emitted directly or indirectly by human activities, including coffee production, transportation, and processing.

Certified Coffee

Coffee that meets specific social, environmental, or quality standards set by certification organizations such as Fair Trade, Rainforest Alliance, UTZ, or Organic Certifications.

Coffee Cooperatives

Associations or organizations formed by coffee farmers to collectively market and sell their coffee, share resources, and support each other in achieving better prices and sustainable farming practices.

Coffee Processing

Coffee processing encompasses the methods used to transform freshly harvested coffee cherries into dried coffee beans ready for roasting. Common methods include washed processing, where cherries are pulped, fermented, and then dried; natural processing, where whole cherries are dried intact; honey processing, where some or all of the mucilage is left on the beans during drying; anaerobic fermentation, conducted in sealed containers; and extended fermentation, which involves fermenting beans for an extended period. Each method imparts distinct flavours and characteristics to the beans, contributing to the diverse range of flavours found in brewed coffee.

Commodity Coffee

Commodity coffee refers to coffee that is produced and traded as a standardized, bulk commodity, often characterized by its lower quality and relatively lower price compared to specialty coffee. Commodity coffee is typically grown on large-scale plantations or farms in regions with favourable climates for coffee cultivation. It is often harvested using mechanized methods and processed in bulk. The focus in commodity coffee production is often on maximizing yield and efficiency rather than on producing unique or high-quality beans. Commodity coffee is commonly sold through commodity markets and is used in mass-market coffee products such as instant coffee, pre-ground coffee, and commercial blends. Due to its standardized nature and lower production costs, commodity coffee generally sells at a lower price point compared to specialty coffee.

Crop Diversification

Agricultural practice of growing multiple crops on the same land, can improve soil health, reduce pest and disease pressure, and provide additional sources of income for coffee farmers.

Direct Trade

Direct trade in coffee refers to a sourcing model where coffee roasters or buyers establish direct relationships with coffee producers or farms, bypassing traditional importers and middlemen. In direct trade arrangements, coffee buyers work directly with coffee farmers to negotiate prices, ensure fair compensation, and establish quality standards. This approach emphasizes transparency, sustainability, and ethical practices throughout the coffee supply chain. Direct trade often involves visits to coffee farms by buyers to build relationships, provide support, and gain a deeper understanding of the farming practices and conditions. By eliminating intermediaries, direct trade aims to provide better financial returns to coffee farmers, promote environmental stewardship, and improve the overall quality of the coffee beans.

Fair Price

A price paid to coffee producers that cover the cost of production and provides a living wage, allowing farmers to invest in their farms, communities, and livelihoods.

Fair Trade

Fairtrade in coffee refers to a trading model that promotes equitable and sustainable relationships between coffee producers, traders, and consumers. It aims to ensure that coffee farmers receive fair compensation for their labour and resources, as well as to promote social and environmental responsibility in coffee production. Fair trade organizations, such as Fair Trade International or Fair Trade USA, establish and certify standards for fair trade practices, which may include fair prices for coffee, decent working conditions, environmental sustainability, and community development initiatives. Coffee farmers who meet these standards are certified as fair trade producers and may receive a premium price for their coffee, which is often reinvested into their communities for education, healthcare, or infrastructure projects. By supporting fair trade coffee, consumers can contribute to a more equitable and sustainable coffee industry while enjoying high-quality coffee products.

Farmer

A coffee farmer is an individual or group of individuals who cultivate coffee plants and harvest coffee cherries for commercial production. These farmers are responsible for growing, nurturing, and maintaining coffee trees in coffee-producing regions around the world. They oversee various aspects of coffee cultivation, including planting new trees, pruning existing ones, managing pests and diseases, and harvesting ripe coffee cherries when they reach maturity.

Green Coffee Buyer

A green coffee buyer is an individual or entity responsible for purchasing green (unroasted) coffee beans from coffee producers or suppliers for further processing and distribution. Green coffee buyers play a critical role in the coffee supply chain, as they are responsible for sourcing high-quality coffee beans from coffee-producing regions around the world. They often travel to coffee-growing regions to establish relationships with coffee producers, evaluate the quality of coffee beans, negotiate prices, and arrange for the transportation of green coffee beans to their destination. Green coffee buyers must have a deep understanding of coffee quality, market trends, and coffee-producing regions to make informed purchasing decisions. They work closely with coffee roasters, importers, and other stakeholders to ensure a steady supply of high-quality green coffee beans for roasting and consumption.

Organic

Organic coffee refers to coffee that has been produced without the use of synthetic pesticides, herbicides, fertilizers, or other artificial chemicals. Instead, organic coffee is grown using natural methods that prioritize soil health, biodiversity, and ecological balance. This includes practices such as composting, crop rotation, and the use of natural pest control methods to maintain soil fertility and protect crops from pests and diseases. Organic coffee farming also prohibits the use of genetically modified organisms (GMOs) and synthetic additives during processing and production. Organic certification ensures that coffee farmers adhere to strict organic standards set by certifying bodies, verifying that the coffee beans have been grown and processed according to organic principles. Organic coffee is valued for its environmental sustainability, as well as its potential health benefits and the assurance of a more natural and chemical-free coffee product.

Patio Drying

Patio drying in coffee refers to a method of drying coffee cherries after they have been harvested. This process involves spreading the coffee cherries out in a single layer on large, flat surfaces, typically made of concrete or raised beds, to allow them to dry naturally under the sun's heat. Patio drying is commonly used in coffee-producing regions with dry and sunny climates, where the coffee cherries can be left to dry for several days to weeks, depending on weather conditions. During the drying process, the cherries are regularly turned and monitored to ensure even drying and to prevent mold or spoilage. Patio drying is considered a traditional and environmentally friendly method of processing coffee, as it requires minimal water usage and allows for natural fermentation and flavour development in the coffee beans.

Plantation

A plantation in coffee refers to a large-scale agricultural establishment dedicated to the cultivation of coffee plants. These plantations are typically located in regions with suitable climates and soil conditions for coffee cultivation, such as tropical or subtropical areas with high altitudes and adequate rainfall. Coffee plantations may consist of extensive areas of land planted with rows of coffee trees, known as coffee groves or coffee fields. The trees are carefully tended to, with regular pruning, fertilization, and pest control measures to ensure healthy growth and maximum yield.

Post-processing Care

Post-processing care in coffee refers to the measures taken after coffee beans have been processed to ensure their quality is maintained during storage and transportation. This care involves various activities such as sorting, grading, and packaging the coffee beans properly. Sorting involves removing any defective beans or foreign matter to ensure only high-quality beans are included. Grading involves categorizing the beans based on factors such as size, weight, and visual appearance. Once sorted and graded, the beans are typically packaged in airtight containers or bags to protect them from exposure to moisture, air, and sunlight, which can degrade their quality over time. Proper post-processing care helps preserve the freshness, flavour, and aroma of the coffee beans until they reach the consumer, ensuring a high-quality coffee experience.

Producer

A coffee producer is an individual, company, or cooperative involved in the cultivation and harvesting of coffee plants. They are responsible for growing and maintaining coffee trees, nurturing the cherries to ripeness, and harvesting the coffee cherries when they reach maturity. Coffee producers play a vital role in the coffee supply chain, as they are the first link in the process of bringing coffee from the farm to the cup. Depending on the scale of their operation, coffee producers may own small family farms or large estates, and they may cultivate coffee using traditional methods or modern agricultural practices. They often work closely with coffee exporters and buyers to sell their coffee beans to international markets or local processing facilities. The efforts of coffee producers directly impact the quality and characteristics of the coffee beans, making them essential contributors to the coffee industry.

Season

Season refers to the period when coffee cherries are harvested from coffee trees. Coffee harvesting seasons vary depending on the region and the specific type of coffee being grown. Generally, coffee harvesting seasons occur once or twice a year in coffee-producing regions around the world. The timing of the season can vary based on factors such as altitude, climate, and the specific variety of coffee being cultivated. For example, in many Central and South American countries, the main coffee harvest typically occurs between October and March, while in East Africa, harvesting may take place between November and January. The season is a crucial time for coffee farmers, as it determines the quantity and quality of coffee beans available for processing and export, ultimately impacting the global coffee supply and market prices.

Shade-Grown Coffee

Coffee grown under a canopy of shade trees, often in agroforestry systems. Shade-grown coffee promotes biodiversity, soil health, and ecosystem resilience, while also providing habitat for birds and other wildlife.

Single-origin

Single-origin in coffee refers to coffee beans that are sourced from a specific geographical location or region, typically from a single farm, estate, or cooperative. These beans are grown and harvested in a particular area, such as a specific country, region within a country, or even a specific farm or estate. Single-origin coffees are prized for their unique and distinctive flavour profiles, which are influenced by factors such as soil composition, climate, altitude, and farming practices specific to that particular region. By highlighting the origin of the beans, single-origin coffees offer coffee enthusiasts the opportunity to experience the terroir and characteristics of a specific coffee-growing region, showcasing the diversity and complexity of coffee flavours from around the world.

Specialty

Coffee specialty refers to a category within the coffee industry that encompasses high-quality, unique, and meticulously produced coffee beans. Specialty coffee is distinguished by factors such as exceptional flavor profiles, traceable sourcing, and sustainable cultivation practices. These beans are often grown in specific microclimates, harvested at optimal ripeness, and processed with care to preserve their distinct characteristics. Specialty coffee roasters prioritize transparency and direct relationships with coffee farmers, aiming to showcase the best of each coffee origin. As a result, specialty coffee offers consumers a premium coffee experience with a focus on flavor complexity, origin story, and ethical sourcing practices.

Sustainability

Sustainability in coffee refers to the practice of producing, processing, and consuming coffee in a way that minimizes negative environmental and social impacts while promoting long-term viability for coffee-producing communities and ecosystems. Sustainable coffee practices encompass a range of initiatives aimed at conserving biodiversity, protecting natural resources, and supporting the livelihoods of coffee farmers and workers. This includes practices such as shade-grown cultivation, organic farming methods, water conservation, fair labour practices, and community development projects. By supporting sustainable coffee initiatives, consumers can contribute to the preservation of the environment and the well-being of coffee-producing communities around the world.

Traceability

The ability to track and trace the journey of coffee from its origin through the supply chain, providing transparency and accountability regarding its production, processing, and distribution.


Espresso-Related

Blonding

Espresso coffee blonding refers to a specific occurrence during the espresso extraction process where lighter-colored liquid is extracted toward the end of the shot. This phenomenon typically happens when the espresso shot is nearing completion and signals that the extraction process is ending. It is characterized by a lighter, almost blonde hue in the liquid espresso. This blonding stage can impact the taste and quality of the espresso, potentially indicating over-extraction if it happens too early or under-extraction if it happens too late. Baristas often use the timing and appearance of blonding to adjust their extraction process to achieve the desired balance of flavours and characteristics in the espresso shot.

Channeling

Channelling refers to the uneven flow of water through the coffee grounds during the extraction process. It occurs when water finds paths of least resistance through the coffee puck, leading to inconsistent extraction and potentially undesirable flavours in the final cup of coffee. Channeling often results from improper distribution and tamping of coffee grounds in espresso preparation or irregularities in the coffee bed in other brewing methods such as pour-over or French press. When water channels through the coffee grounds, it bypasses certain areas, resulting in over-extraction in some parts and under-extraction in others, leading to a less balanced and flavorful brew. Preventing channelling requires careful and even distribution of coffee grounds, proper tamping, and attention to brewing variables such as grind size and water distribution.

Dial-In

Dial-in in coffee refers to the process of adjusting various parameters, such as grind size, coffee dose, brewing time, and water temperature, to achieve the optimal flavour and extraction in a particular coffee brewing method. It is a critical step in coffee preparation, especially in espresso brewing, where slight adjustments can significantly impact the taste and quality of the final cup. Dialling in involves experimenting with different settings and making incremental adjustments until the desired flavour profile is achieved. This process requires careful observation, tasting, and fine-tuning to ensure consistency and repeatability in coffee brewing.

Dose

In espresso coffee, dose refers to the amount of ground coffee used in the preparation of a single shot of espresso. It is typically measured in grams and determines the quantity of coffee that will be extracted during the brewing process. The dose can vary depending on factors such as the type of coffee beans used, the desired strength of the espresso, and the size of the portafilter basket. Baristas often experiment with different doses to achieve the optimal balance of flavours, aromas, and extraction yield in the espresso shot. A precise and consistent dose is essential for producing high-quality espresso with the desired taste and characteristics.

Double Basket

In espresso coffee, a double basket refers to a type of portafilter basket designed to hold a larger dose of coffee grounds compared to a single basket. It is typically used to prepare a double shot of espresso, which is a larger and more concentrated serving of espresso compared to a single shot. The double basket has a deeper and wider design to accommodate the increased amount of coffee grounds needed for a double shot. Baristas often use double baskets to create espresso drinks with a stronger flavor and more body, as well as to accommodate larger serving sizes or preferences for double shots of espresso.

Espresso brew ratios

The espresso brew ratio refers to the ratio of coffee grounds to water used in the preparation of an espresso shot. It is typically expressed as a numerical value, representing the weight of coffee grounds in grams to the weight of water in milliliters (or ounces). For example, a common espresso brew ratio might be 1:2, which means using 1 gram of coffee grounds for every 2 milliliters of water. This ratio determines the strength, flavor intensity, and extraction yield of the espresso shot. Baristas often adjust the brew ratio based on factors such as coffee bean variety, roast level, grind size, and personal preference to achieve the desired taste profile in the final espresso. A higher brew ratio produces a stronger and more concentrated shot, while a lower ratio results in a milder and more diluted espresso.

Flushing or Backflushing

Flushing or backflushing in coffee refers to a cleaning process for espresso machines. It involves forcing water through the machine's group head and portafilter without coffee grounds to remove coffee oils, residue, and buildup that can accumulate over time. This process helps maintain the cleanliness and functionality of the espresso machine, ensuring optimal performance and flavour consistency in the brewed espresso. Flushing or backflushing is typically done regularly as part of routine maintenance to prevent clogs, maintain proper water flow, and extend the lifespan of the espresso machine.

Group Head

The group head in coffee refers to the part of an espresso machine where the portafilter is attached. It is essentially the interface between the espresso machine's water delivery system and the coffee grounds. The group head typically consists of a metal or brass component with a threaded collar into which the portafilter is securely inserted. It contains channels and valves that control the flow of water into the portafilter and through the coffee grounds during the brewing process. The group head plays a crucial role in ensuring proper water distribution and pressure for extracting the flavours, oils, and aromas from the coffee grounds, ultimately influencing the quality and consistency of the espresso shot.

PID

PID in coffee refers to a Proportional-Integral-Derivative controller, a technology commonly found in espresso machines. A PID controller regulates the temperature of the water used for brewing espresso with high precision. It achieves this by constantly monitoring the temperature and adjusting the heating elements accordingly to maintain a consistent temperature throughout the brewing process. This precise temperature control is crucial for achieving optimal extraction and flavor consistency in espresso shots. Espresso machines equipped with PID controllers are favored by coffee enthusiasts and professionals for their ability to produce high-quality espresso with greater accuracy and repeatability.

Pre-infusion

Pre-infusion in coffee refers to a process that occurs during espresso brewing where a small amount of water is initially applied to the coffee grounds at low pressure before the full extraction begins. This gentle wetting of the coffee grounds helps to saturate them evenly and allows them to swell and release gases trapped within the coffee bed. Pre-infusion can promote more even extraction, enhance flavour clarity, and reduce the likelihood of channeling or uneven extraction during the brewing process. It is a common feature in espresso machines and is often adjustable to suit different coffee varieties and brewing preferences. Pre-infusion is valued by coffee enthusiasts and professionals for its ability to improve the overall quality and consistency of espresso shots.

Pressure Profiling

Pressure profiling in coffee refers to the ability to vary the pressure applied during the espresso brewing process. This technique allows baristas or coffee enthusiasts to manipulate the pressure profile over time, rather than maintaining a constant pressure throughout the extraction. By adjusting the pressure profile, it's possible to influence the rate of extraction, flavour development, and overall characteristics of the espresso shot. Pressure profiling can be achieved using advanced espresso machines equipped with sophisticated technology, such as variable pressure pumps or pressure profiling systems. This approach is valued by specialty coffee professionals for its ability to tailor the extraction process to specific coffee beans, resulting in more nuanced and complex flavour profiles in the finished espresso.

Puck

A puck in coffee refers to the compacted mass of used coffee grounds remaining in the portafilter after brewing espresso. Once the brewing process is complete, the water has passed through the coffee grounds, extracting flavours, oils, and aromas, leaving behind a dense, puck-shaped mass of spent coffee grounds. The puck is typically removed from the portafilter and discarded before preparing another espresso shot. A well-formed and evenly distributed puck is a sign of a properly brewed espresso, indicating that the coffee grounds were properly tamped and the extraction was uniform. The puck is an essential aspect of the espresso-making process, as it helps ensure consistent extraction and flavour in each espresso shot.

Puck Preparation

Puck preparation in coffee refers to the process of preparing the coffee grounds in the portafilter before brewing espresso. It involves dosing the correct amount of coffee grounds into the portafilter basket, distributing them evenly across the basket, and then tamping or compressing the grounds to create a uniform and level surface. Proper puck preparation is essential for achieving consistent extraction and flavour in espresso shots. It helps ensure that the water flows evenly through the coffee grounds during brewing, maximizing flavour extraction and preventing channelling or uneven extraction. Puck preparation is a critical step in the espresso-making process and is often practiced and perfected by baristas and coffee enthusiasts to achieve the best possible espresso results.

Puck Screen

A puck screen in coffee refers to a small, perforated metal disc or screen that is placed at the bottom of the portafilter basket. Its purpose is to distribute water evenly across the coffee grounds during the brewing process, promoting consistent extraction. The puck screen helps prevent channeling, where water bypasses some areas of the coffee grounds, leading to uneven extraction and potentially undesirable flavours in the espresso shot. By ensuring that water is dispersed evenly through the coffee grounds, the puck screen contributes to the overall quality and consistency of the espresso extraction.

Pulling a shot

Pulling a shot in coffee refers to the process of brewing espresso. It involves extracting a specific amount of hot water through finely ground coffee beans under high pressure, typically using an espresso machine. The term "pulling" comes from the action of pulling down the lever or pressing the button to initiate the espresso extraction process. During the pull, hot water is forced through the coffee grounds in the portafilter, extracting flavours, oils, and aromas from the coffee, and resulting in a concentrated and flavourful espresso shot. Pulling a shot requires precise control over factors such as grind size, coffee dosage, water temperature, and brewing time to achieve optimal extraction and flavour balance. It is a fundamental skill for baristas and coffee enthusiasts alike and is the basis for many espresso-based drinks such as lattes, cappuccinos, and macchiatos.

Single Basket

A single basket in coffee refers to a type of portafilter basket used in espresso machines. It is designed to hold a single dose of coffee grounds for brewing a single espresso shot. Single baskets typically have a smaller capacity compared to double baskets, allowing for a more concentrated extraction of flavors from a smaller amount of coffee grounds. They are commonly used in home espresso machines or by baristas when preparing single espresso shots. Single baskets are valued for their ability to produce a well-balanced and flavourful espresso with a rich crema, particularly when paired with proper grind size, tamping technique, and brewing parameters.

Spouted Portafilter

A spouted portafilter in coffee refers to a type of portafilter used in espresso machines. It consists of a handle, a filter basket, and one or two spouts protruding from the bottom. The spouts serve as outlets for the brewed espresso, directing it into the serving cup. Spouted portafilters are commonly used in commercial espresso machines and are suitable for brewing multiple espresso shots simultaneously. They help contain the flow of espresso and make it easier to pour into cups without splashing or spilling. Spouted portafilters are preferred in busy coffee shops for their convenience and efficiency in serving espresso shots.

Stall

Stall in coffee refers to a phenomenon that occurs during the espresso brewing process when the flow of water through the coffee grounds slows down or stops completely. This can happen for various reasons, such as a grind size that is too fine, uneven distribution of coffee grounds in the portafilter, or excessive tamping pressure. When a stall occurs, it can result in under-extracted espresso with a sour or bitter taste, as the water is unable to properly extract the flavours from the coffee grounds. Baristas often adjust their brewing parameters to prevent stalls, such as by using a coarser grind size, distributing the coffee grounds more evenly, or adjusting the tamping pressure. Ensuring a smooth and consistent flow of water through the coffee grounds is crucial for achieving a well-extracted and balanced espresso shot.

Tamping Pressure

Tamping pressure in coffee refers to the amount of force applied when compressing coffee grounds into the portafilter basket of an espresso machine using a tamper. Tamping pressure plays a crucial role in the espresso brewing process, as it determines the density and uniformity of the coffee bed. The goal of tamping is to create a level and evenly compacted surface of coffee grounds to ensure consistent water flow and extraction during brewing. Tamping too lightly may result in uneven extraction while tamping too firmly can lead to channeling or restricted flow. Baristas typically aim for a consistent and controlled tamping pressure to achieve optimal extraction and flavour in their espresso shots.

Tiger Striping

Tiger striping in coffee refers to the contrasting light and dark streaks that form in the crema of an espresso shot during brewing, resembling the pattern of a tiger's stripes. It indicates a well-prepared shot with a balanced extraction of flavour compounds and oils, reflecting quality and skill in the coffee-making process. Achieving consistent tiger striping requires precise adjustments in grind size, tamping pressure, and extraction time by skilled baristas.

Distribution

In espresso coffee, distribution refers to the process of evenly distributing the coffee grounds within the portafilter basket before tamping. Proper distribution ensures uniform extraction of flavours and aromas during the brewing process. Baristas typically use techniques such as tapping, levelling, and swirling the portafilter to achieve an even distribution of coffee grounds. Uneven distribution can lead to channelling, where water flows through certain areas of the coffee puck more quickly than others, resulting in an imbalanced extraction and potentially affecting the taste and quality of the espresso shot. Therefore, consistent and thorough distribution of coffee grounds is crucial for producing high-quality espresso with optimal flavour and consistency.

Espresso Machine

An espresso machine is a specialized coffee brewing device designed to produce espresso, a concentrated coffee beverage. It typically consists of several key components, including a water reservoir or boiler, a pump or lever mechanism for creating pressure, a portafilter (a handle with a basket to hold coffee grounds), and a steam wand for frothing milk. Espresso machines use hot water, typically heated to around 195°F to 205°F (90°C to 96°C), and high pressure, usually around 9 bars (9 times atmospheric pressure), to force water through finely ground coffee in the portafilter, extracting the coffee's flavours, oils, and aromas. This process results in a small serving of espresso with a rich flavour, creamy texture, and layer of golden foam called crema on top. Espresso machines come in various types, including manual, semi-automatic, automatic, and super-automatic, each offering different levels of control and convenience in the espresso-making process. They are widely used in homes, coffee shops, and restaurants to prepare espresso-based drinks such as lattes, cappuccinos, and macchiatos.

Knock Box

A coffee knock box is a small container, typically made of metal or durable plastic, used to dispose of used coffee grounds from an espresso machine's portafilter. After brewing an espresso shot, the portafilter is tapped against a bar or rubber surface to remove the spent coffee puck. The knock box provides a convenient and hygienic way to collect and contain the used grounds, preventing them from making a mess on countertops or in trash bins. Once filled, the grounds can be easily emptied into a compost bin or discarded. Coffee knock boxes come in various sizes and designs to suit different espresso setups, making them an essential accessory for espresso enthusiasts and baristas alike.

Naked Portafilter

Naked portafilter in coffee refers to a portafilter that has been modified by removing the bottom or underside, exposing the basket and coffee puck during the espresso extraction process. This modification allows the barista to observe the coffee extraction more directly, providing insight into the distribution and quality of the coffee grounds, as well as the consistency of the extraction. Naked portafilters are commonly used in specialty coffee shops and by home enthusiasts who are interested in perfecting their espresso-making technique. They can help identify issues such as uneven tamping, channeling, or improper grind size, ultimately leading to better extraction and a higher-quality espresso shot.

Portafilter

Naked portafilter in coffee refers to a portafilter that has been modified by removing the bottom or underside, exposing the basket and coffee puck during the espresso extraction process. This modification allows the barista to observe the coffee extraction more directly, providing insight into the distribution and quality of the coffee grounds, as well as the consistency of the extraction. Naked portafilters are commonly used in specialty coffee shops and by home enthusiasts who are interested in perfecting their espresso-making technique. They can help identify issues such as uneven tamping, channeling, or improper grind size, ultimately leading to better extraction and a higher-quality espresso shot.

Rotary and Vibratory Pump

Rotary and vibratory pumps are two types of pumps used in espresso machines to pressurize water for brewing coffee. Rotary pumps, driven by an electric motor, offer reliability and quiet operation, commonly found in commercial machines. Vibratory pumps, powered by vibrating diaphragms, are smaller and more affordable, often used in home machines. Both pumps provide the pressure needed to extract flavors from coffee grounds for a rich espresso shot.

Steam Valve

A steam valve in coffee refers to a component of an espresso machine that controls the flow of steam used for frothing milk. Typically located on the machine's exterior, the steam valve is a lever or knob that can be turned or lifted to activate the steam wand. When the valve is opened, steam is released from the machine's boiler and directed through the steam wand, where it is used to heat and froth milk for espresso-based drinks such as lattes and cappuccinos. Baristas can adjust the steam valve to regulate the intensity and flow rate of the steam, allowing for precise control over the frothing process and the texture of the milk foam. The steam valve is an essential tool for creating the perfect milk-based espresso beverages, adding richness and texture to the final cup.

Steam Wand

A steam wand in coffee refers to a component of an espresso machine used to heat and froth milk for espresso-based drinks such as lattes, cappuccinos, and macchiatos. The steam wand typically consists of a metal tube with a nozzle at the end that releases steam when activated. To froth milk, the steam wand is inserted into a pitcher of cold milk, and steam is released, creating a whirlpool effect that incorporates air into the milk, resulting in a creamy and velvety texture. Baristas can control the intensity of the steam and the frothing process to achieve different levels of milk foam, from a light and airy froth for cappuccinos to a denser microfoam for lattes. The steam wand is a vital tool for creating the perfect milk-based espresso drinks, adding texture and flavour to the final beverage.

Tamper

A tamper in coffee refers to a tool used to compress coffee grounds evenly and firmly into the portafilter basket of an espresso machine. Typically, a tamper consists of a flat base, often made of stainless steel or other heavy materials, attached to a handle. Baristas or coffee enthusiasts use the tamper to apply downward pressure on the coffee grounds in the portafilter, ensuring uniform density and distribution before brewing. Proper tamping is essential for achieving consistent extraction and flavour in espresso shots, as it helps create a uniform surface for the water to pass through during brewing. Tamper sizes vary to match the diameter of the portafilter basket, and baristas often develop their tamping technique to ensure even and consistent compression of the coffee grounds.

Tamper Mat

A tamper mat in coffee refers to a soft, usually rubberized mat placed on a countertop or workstation to provide a stable and cushioned surface for tamping espresso. These mats often feature a raised edge or lip to contain any stray coffee grounds and prevent messes on the counter. Baristas use tamper mats to protect both their equipment and work surfaces while tamping coffee grounds into the portafilter basket. Additionally, the tamper mat helps to absorb some of the impact from tamping, reducing strain on the wrist and hand. Tamper mats are commonly found in coffee shops and espresso bars, providing a convenient and practical solution for tamping espresso shots.

WDT Tool

A WDT (Weiss Distribution Technique) tool in coffee refers to a device or method used to evenly distribute coffee grounds within the portafilter basket before tamping in espresso preparation. It typically consists of a tool with fine needles or pins arranged in a pattern to penetrate and distribute the grounds evenly. The purpose of using a WDT tool is to promote uniform extraction during the brewing process by preventing channelling—uneven water flow through the coffee puck—which can lead to over-extracted or under-extracted espresso shots. WDT tools are often used by baristas to improve consistency and flavour in espresso extraction.


Other Coffee Terms

Bar

A coffee bar is a specialized establishment or section within a café or restaurant that primarily serves a variety of coffee-based beverages. It typically features a counter or bar where skilled baristas prepare and serve espresso drinks, pour-over coffee, and other specialty brews. Coffee bars often offer a cozy and inviting atmosphere for customers to enjoy their drinks, whether they're seeking a quick caffeine fix or a relaxed place to socialize. In addition to serving coffee, many coffee bars also provide a selection of pastries, snacks, and light meals to complement the beverage offerings. Whether located in bustling urban centers or quaint neighbourhood settings, coffee bars are popular destinations for coffee enthusiasts seeking high-quality and expertly crafted drinks.

Barista

A barista is a skilled and knowledgeable coffee professional responsible for preparing and serving a variety of coffee-based beverages in a café, coffee shop, or other food and beverage establishment. Beyond simply brewing coffee, a barista is adept at operating espresso machines, grinding coffee beans to the correct consistency, steaming milk to create creamy foam, and crafting intricate latte art designs. Additionally, baristas often possess a deep understanding of coffee beans, roasts, and brewing methods, allowing them to provide recommendations and insights to customers. With their expertise and passion for coffee, baristas play a pivotal role in creating the enjoyable and memorable coffee experiences that customers seek.

Bloom

In coffee, bloom refers to the initial release of gases, primarily carbon dioxide, from freshly ground coffee when hot water is poured over it during the brewing process. This release causes the coffee grounds to swell and bubble up, creating a frothy appearance on the surface of the grounds. The bloom is an essential step in the brewing process as it allows trapped gases to escape, ensuring more even extraction and a better-tasting cup of coffee. It's particularly noticeable in freshly roasted coffee beans, which retain more gases, and is often observed in pour-over and French press brewing methods. Blooming allows for a more consistent and flavorful extraction by degassing the coffee grounds before the full brewing process begins.

Brewed Weight

Brewed weight in coffee refers to the total weight of the liquid coffee that is produced after brewing. It is measured after the coffee grounds have been steeped or extracted with water through a specific brewing method, such as drip brewing, pour-over, French press, or espresso. Brewed weight includes both the water used for brewing and the dissolved solids extracted from the coffee grounds. Monitoring brewed weight is important for consistency and accuracy in coffee preparation, especially in commercial settings where precise measurements are necessary to ensure quality and consistency in the final cup of coffee.

Coarseness

Coarseness in coffee refers to the size of the coffee grounds after they have been ground. Coffee grinders offer various settings to adjust the coarseness of the grind, ranging from very fine to very coarse. Different brewing methods require different grind sizes to achieve optimal extraction and flavour. For example, espresso requires a very fine grind to create the high pressure needed for extraction, while the French press requires a coarser grind to prevent over-extraction and sediment in the coffee. Adjusting the coarseness of the grind allows coffee enthusiasts to tailor their brewing process to achieve the desired flavour, strength, and texture in their cup of coffee.



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