Abyssinia Ethiopia was formerly known as Abyssinia, or this term may refer a coffee cultivar. Abyssinia is also a cultivar brought to Java in 1928 (not the original Typica brought from Yemen to Batavia, Java via India). Since then, they have been brought to Aceh as well. Another group of Ethiopian varieties found in Sumatra are called USDA, after an American project that brought them to Indonesia in the 1950s.
Acaia Acaia is planted mainly in Brazil. The Acaia genotype was derived by selection from progenies of the Mundo Novo germplasm, which arose from natural hybridization between Sumatra and Bourbon cultivars. ("Sumatra" is in the former ICO collections, but if it is a older Typica or a hybrid is unknown)
Aceh Aceh District is north of North Sumatra and produces some very classic Sumatra coffees. The center of coffee in Aceh is Lake Tawar and Takengon, the city by the lake. It often looks like a mispelling of "Ache" but is pronounced "Ah-Chay". Gayo is a name used in relation of Aceh since it is one of the main ethnic groups of the region.
Acerbic Acerbic refers to an unpleasant sourness in the coffee. It can refer to problems with fermentation, the presence of defect "sours" in the green coffee. It can also be a brewing problem, or more specifically, the bitter sourness of coffee held too long at temperature.
Acetic Acid Acetic acid can lead to vinegar-like flavors in over-mature coffees, or bitterness in high quantities. But in moderate amounts it adds a positive winey note to the cup. Acetic acid classifies as an organic acid, and is one that can be detected by smell.
Acids Many acids contribute to coffee flavor; malic, citric, quinic, tartaric, phosphoric, etc. See ACIDITY or specific acids. While acids in coffee sounds like a bad term, and one that leads to stomach discomfort our sourness, this is not usually true. Drinking coffee with no food in the digestive system can lead to discomfort since coffees have enough oils to trigger digestive acids. Eat before or while taking morning coffee.
Acrid A general negative flavor term, from defect bean, bad roast, or bad brewing: Unpleasantly sharp, astringent or bitter to the taste or smell.
After-dinner roast An after-dinner roast, or after dinner roast, or after dinner blend, is intended to compliment after-dinner desserts. A typical after dinner coffee is dark roasted and has low acidity. Okay, this is a joke entry... but we saw it in a list of coffee flavor terms and had to add it. -Tom
Afternose Commonly used in reference to wine, afternose compliments aftertaste, but refers to residual olfactory sensations after the coffee has left the palate.
Agtron Agtron spectrophotometers are used in the coffee industry and also in other lab applications for color matching, color analysis, sorting, and other scientific measurements.
Aldehydes Along with Ketones, Aldehydes are an important factor in coffee aromatics, partially formed in roasting by the interaction of fatty acids and oxygen. They are partially formed by the Strecker Degradation of amino acids in the coffee roast environment.
Alfred Peet The founder of Peet's Coffee in Berkeley California, Alfred was known for reintroducing a dark roast style to the West Coast. For some time, the logic of light roasting had to do with economics: the longer you roast the more weight you lose, hence the less product you have to sell by the Lb. His dark roast style was contrary to this, and Peets was known for buying higher quality coffee. He sold Peets in 1979 but continued to buy green coffee until 1983. He passed away in August 2007.
Alkaloid A taste sensation characterized by a dryness and related bittering flavors, sometimes at the posterior of the tongue, usually sensed in the aftertaste. It is not always a wholly a bad thing, in moderate intensities
Altitude The height above sea level that a coffee is grown. Coffee grown at higher altitude is often considered better, though this is far from a rule. Higher-grown coffee tend to mature more slowly and have a denser bean, which may result in a more even roast. Overall quality, especially acidity, increases with altitude. In South and Central America, coffees are graded and classified based on altitude.
Ambient Temperature This term is used to describe the overall temperature in a given environment. It can potentially affect the way home roasters operate depending on how extreme the temperature is. A very cold ambient temperature will require the roaster to work harder to achieve proper roasting temperatures which may extend the amount of time necessary to reach desired roast levels. In some cases, roasters will not be able to operate in extremely cold environments.
Anise Anise is a flowering plant in the family Apiaceae native to the eastern Mediterranean region and southwest Asia known for its flavor that resembles liquorice, fennel, and tarragon. Anise seed is highly aromatic and has a flavor similar to fennel and licorice, used to flavor various foods and liquors
Arabica Arabica refers to Coffea Arabica, the taxonomic species name of the genus responsible for around 75% of the world's commercial coffee crop. Coffea Arabica is a woody perennial evergreen that belongs to the Rubiaceae family (same family as Gardenia). The other major commercial crop is Coffea
Arabigo Arabigo is a term seen in Latin America and refers to Typica cultivar
Arabusta An interspecific hybrid of coffea arabica and coffea
Arusha The name of a cultivar from Tanzania, as well as a general trade name for Tanzania coffees from Mount Meru area
asalan The term in Bahasa Indonesian for green coffee that is hulled, dried, and ready to sell to an exporter. Used in North Sumatra and the Aceh coffee regions. Easy to misread as Aslan, the friendly lion, just as Aceh is so easy to read as Ache.
Ashy A quality in aroma or flavor similar to that of an ashtray, the odor of smokers' fingers or the smell one gets when cleaning out a fireplace. In the most moderate amount, it may not ruin a cup, but is never used by Sweet Maria's as a positive quality. Ashy flavors can hint at roasting defects, anything from smokey unclean air being recycled through a roasting drum (or a roaster that doesn't vent, like a barbeque drum roaster set-up). Softer, lower-grown coffees will show ashy tastes before high-grown, dense coffees, given the same roast treatment
Astringent Astringency is a harsh flavor sensation, acrid flavor, that provokes a strong reaction. It can have dryness, saltiness, sourness and bitterness as components. It is certainly the opposite of sweetness and cleanness in coffee, always a defect flavor.
Ateng Ateng, with several sub types, is a common name for Catimor coffees widely planted in Sumatra and other Indonesia isles. One will hear of Ateng Jaluk. This cross between Arabica and
Backflushing Backflushing is a process done to espresso machines to clean them: a filter basket with no holes (a "blank" basket) is inserted into the portafilter so that when the machine is activated, pressurized water cannot escape and is instead forced back into the machine to "flush" it. Often, backflushing is done with some type of coffee cleaning detergent in the basket. A typical backflushing protocol is to put coffee cleaner in the blank basket and backflush 5 times, then rinse the cleaner out and backflush 5 times without no cleaner. Note that not all machines can be backflushed.
Baggy Coffees that are held for too long run the risk of this taint. Essentially the coffee comes to absorb the flavors of whatever it is stored in - usually the burlap or jute bag. Many times a darker roast on these coffees will conceal this taint. Baggy flavors are the result of several factors: the fats in the coffee absorbing the smell of burlap, the loss in moisture content as the coffee ages, and other chemical changes. For some origins theses changes in flavor can emerge in 1 year, 9 months, even 6 months for some decafs
baked Baked flavor happens in under-roasted coffees haven't developed their character, or coffees that simply sat in the roaster too long without enough heat. It can also happen to scorched coffees where the outside of the bean is browned and the inside is under-roasted. Flavors are typically astringent, grain-like, sour, and body is thin and possibly gritty.
Balance Balance is both an obvious and slippery taste term. It implies a harmony and proportion of qualities, and perhaps a mild character since no one quality dominates. Balance can exist between aromatics, flavors, textural sensations, and aftertaste, or between competing flavors. Bittersweet is a term that implies a balance of 2 basic sapid flavors.
basic flavors "In the mouth" sensations derived from the basic flavors: salty, sweet, sour, bitter, savory (umami). These are the core sensations that can be experienced without the input of the olfactory, through the papilla located in taste buds on the tongue.
Batch One of the most important variables in roasting coffee, the weight or volume of the coffee being put in to the roaster will dramatically effect the outcome of the roast. A good scale or the right scoop is a must when deciding what size batches to use as different coffees have varying densities and bean sizes. In using air roasters batches must be carefully measured by volume. In using drum roasters batches must be carefully weighed.
Behmor Coffee Roaster A drum roaster designed for home roasters, with variable batch sizes (from 1/4 pound to 1 pound) and a smoke-reduction system.
beneficio In Latin American countries, a wet mill is called a Beneficio, where fresh coffee cherries are brought for pulping, fermentation, and drying. In Rwanda and some other African countries it is a "washing station". In Kenya it is a "coffee factory".
Bergamot Bergamot orange is used to scent Earl Grey tea, in perfumery and confection baking. It is the size of an orange, with a yellow color similar to a lemon, and has a pleasant fragrance. The juice tastes less sour than lemon, but more bitter than grapefruit. It is only grown commercially in Calabria Italy
Bergendal Bergendal is found less and less frequently in Aceh, Sumatra. It is a low-producing plant of Typica origins. Much of the Typica was lost in the late 1880s, when Coffee Leaf Rust swept through Indonesia. However, both the Bergendal and Sidikalang varieties of Typica can still be found in More remote areas. It is possible the name derives from Berg und Tal, " hill and valley."
Bittersweet Bittersweet is from the language of chocolate, and describes the co-presence of positive bittering compounds balanced by sweetness. It is directly related to caramelization, but has inputs from other roast reactions, as well as bittering flavors such as trigonelline. Bittersweet is usually a roast flavor term, but is always specific to the green coffee too (good bittersweetness would not develop at any roast level in a coffee without the native compounds to engender it). Usually, bittersweetness of a coffee develops as the roast gets darker and eventually overpowers other flavors. It dark roasts, acidity is reduced, while the caramely taste of sugars form the stimulating bittersweetness.
black bean A coffee bean whose interior is totally back (endosperm), due to fungi, mold, yeast, pest. This happens with over-mature coffee cherry where the bean falls to the ground and is attacked by the Colletotrichum coffeeeanum fungus, or other aforementioned problem. Overfermentation of mature cherries can also result in back beans due to mold and yeast attack. Full black beans score 1 full defect point in coffee grading (the worst type of defect). Black beans will resist roasting and have a very harsh, acrid flavor
Blackberry Blackberry is found as a fragrance, aroma or flavor in some coffees. I find that it is less obvious at very light roast levels, such as City roast, and is more pronounced at City+ to Full City. It might be found in a wide range of origins, from Rwanda and Kenya, to Guatemala and Colombia. Mora is the blackberry found in Latin America, and is a slightly different plant than what we call blackberry in North America.
Blade Grinder The standard home coffee grinder, which works by way of a high-speed rotating blade. Blade grinders are inexpensive, but this comes at the expense of accuracy: grounds from a blade grinder are substantially less even than those from a burr grinder. Still, they are durable and when paired with the right brew method (especially those that use paper filters) they are quite acceptable. Don't knock the blade mill! It keeps people grinding coffee fresh, right before brewing, which makes a huge difference in the coffee aromatics.
Blended Coffee A blend is a mixture of coffees from multiple origins. Coffees are typically blended to produce a more balanced cup. Here at Sweet Maria's, almost all of the blends you'll see are made with espresso in mind.
Blue Mountain Cultivar A C. Arabica Var. Typica coffee that shares other features of Typica plants, but also shows some resistance to CBD: Coffee Berry Disease. It is said to be grown in Papua New Guinea but pure lots have not been found, and we buy a small lot of this cultivar from a plot in Kona, Hawaii each year.
Bottomless Portafilter An espresso portafilter with the bottom machined off so the bottom of the filterbasket is exposed. Bottomless portafilters allow you to view distribution problems and channeling: if the flow is uneven across the bottom of the filterbasket, the distribution of grounds in the basket is uneven.
Bourbon Bourbon, along with Typica, are main Coffea Arabica cultivars. Bourbon was developed by the French on the island of Bourbon, now Reunion, in the India Ocean near Africa. The seeds were sold to the French by the British East India Company from Aden, Yemen, and were planted in 1708. After generations, it began to express unique characteristics and became more robust. Bourbon has slightly higher yields and is more robust than Typica in general. It has a broader leaf and rounder cherry (and green bean) than Typica, a conical tree form, and erect branches. It has many local variants and sub-types, including Tekisic, Jackson, Arusha, and the Kenya SL types. In general, Bourbon can have excellent cup character. The cherry ripens quickly, but is at risk from wind and hard rain. It is susceptible to major coffee diseases. Bourbon grows best at altitudes between 1100 - 2000 MASL. Bourbon coffees should have green tips (new leaves) whereas Typicas should have bronze-to-copper tips.
Bourbon Mayaguez A Bourbon cultivar variant from Rwanda and Burundi, from the early part of the 20th century. Bourbon coffees are named for the island in the India Ocean where French colonists grew it.
Brazil Coffee Grades Brazil has it's own grading system for defects. There is a size and physical defect grade, as well as a flavor defect grade. The Brazil flavor grading rates coffee as Strictly Soft (the best), Soft, 'Soft-ish', Hard (+1, +2), Riado, Rioy, Rio Zona (the worst).
Break In coffee cupping, the "breaking of the crust" of floating grounds, part of aromatic evaluation. You add water to the coffee grounds, filling the cup, and wait 4 minutes. At this point there is still a crust of floating coffee grinds. You put your nose right above the cup and "break" this crust by stirring it with the spoon. The grinds sink, and the coffee can be tasted anywhere from 5-15 minutes after the break.
Brewed Coffee Brewed Coffee refers to all coffee preparations produced by adding non-pressurized water to coffee grounds. Contrasted with espresso coffee, which is produced under pressure, brewed coffee is primarily an extraction, and contains a lower amount of total dissolved solids (TDS) and has thinner body.
Brightness A euphemistic term to describe acidity in coffee. A bright coffee has more high, acidic notes. Not to be confused with the brighter roast flavors of light roast levels, such as City to City+ roasts. Read more about acidity to understand its use as a flavor term, not in reference to the quantity of acidity in coffee.
Brown Sugar Brown sugar is a type of sweetness found in coffee ...a sweetness characterized by a hint of molasses, yet quite refined as well. Since Brown sugar of the common type is highly refined (made by recombining molasses with refined white sugar) it makes sense that it's qualities are only mildly rustic. One might distinguish between mild light brown sugar and dark brown types.
Burlap Bags Burlap bags are the traditional container in which coffee is transmitted. Burlap is cheap, but long storage in burlap bags may result in a characteristic "baggy" defect taste.
Burnt Burnt flavors in coffee are the result of over-roasting, fast roasting, or roasting in a high-heat environment. This often occurs when the initial roaster temperature when the green coffee is introduced is too high. Usually, scorching and tipping result in burnt flavors. Sometimes, smokey notes in a cup can be a result of native qualities to the coffee, and not necessarily a defect, or the result of an exotic process such as a Monsooned or Aged coffee.
Burr Grinder A coffee grinder that grinds by passing a flow of beans between a pair of rotating metal discs. The distance between the discs is adjustable, and this adjustment allows one to accurately set the size of the grind. The larger the diameter of the burrs, the faster the grinder is able to grind. Burr grinders can be either "conical" or "flat" burred, each with their own advantages. Ironically, both the cheapest and the most expensive espresso grinders have conical burrs, while mid-range burr grinders and commercial bulk coffee grinders have flat burrs. Grinders can also be divided into "doser" and "doser-less" models: a doser is a mechanism for dosing ground coffee into a portafilter for espresso. Doser models may be more convenient for espresso, but are more difficult to use when grinding coffee into a container for brewed coffee.
buttery Buttery is primarily a mouthfeel description indicating thickness and creamyness. It indicates a high level of lipids (fats) in the coffee, often. Buttery can also be a flavor description, or a combination of both mouthfeel and flavor
Caffeine An alkaloidal compound that has a physiological effect on humans, and a slight bittering flavor. It is found throughout the coffee plant but is more concentrated in the seed / coffee bean. Arabica ranges from 1.0 to 1.6% caffeine, and Robusta (Coffea
Cajuela A standard volume measurement for coffee cherry used in Costa Rica. A Cajuela is a standard box size, or can also be a basket. One Cajuela can result in about 1.5 kilos green coffee. A good picker can pick 15 cajuelas per day.
Cane Sugar A lightly refined sugar, that has a slight rustic sweetness, but without molasses-like flavors of brown sugar or raw sugar. It refers to a sugar that has not fully refined, yet is bleached white. This is commonly found in sugar-producing countries. Sugar bleached white by this sulfitation process is called "mill white", "plantation white", and "crystal sugar".
Cappuccino Cappuccino is an espresso-based beverage with steamed silky milk on top, averaging 150-190 ml.
Cappy A defect term referring to oxidized, unpleasantly sharp cheese flavor, found in coffee that has not been stored correctly, or shipped with cheese.
Caracol The Spanish-language term for Peaberry, Caracol, is the same for "snail".
Caramel Caramel is a desirable form of sweetness found in the flavor and aroma of coffee, and is an extension of roast taste. Extremely light or dark coffees will lose potential caramel sweetness. This is a broad term, and can find many forms since it relates to the degree of caramelization of sugars; light or dark caramel, butterscotch, cookie caramel, syrupy forms, caramel popcorn, various types of candy, caramel malt (beer brewing, many types).
Caramelization Caramelization is slower than Maillard reactions, and requires higher temperatures. These reactions involve only sugars. They really begin up around 150C to 180C, with water being lost from the sugar molecule beginning the chain of events. In all cases the sugar is converted to a furfuryl. These are a type of furans that have a caramelly, slightly burnt and also slightly meaty notes. The same compound is produced via a different route in the Maillard reactions. However it is with prolonged high temperature that many other types of aromas are generated. Caramelisation is more predictable than Maillard reaction due to less variation in the starting compounds. Without the sulphur or nitrogen found in the amino acids caramelization is unable to produce flavors as meaty as Maillard reactions. It is interesting to note how the sugar solutions taste changes in caramelization. A sugar solution initially will be sweet with no aroma. Through caramelization it becomes both sour and a little bitter, as a rich aroma develops. Generally the longer sugar is caramelized the less sweet it tastes, so the key is to balance the benefits of uncaramelized sugar sweetness while avoiding light roast astringency and sourness.
Carbon Dioxide Process A decaffeination method where beans are placed in a liquid bath of highly-pressurized CO2. As I understand it, supercritical CO2 acts as the solvent penetrating the coffee and extracting the caffeine, so when the coffee returns to normal temperature and pressure, there is no residue once the CO2 floats away. Some C02's approach the chemical decafs in cup quality, others are nearer to SWP decafs. Here's a longer and perhaps simpler explanation: Here is how it works: Coffee is mixed with water, and the beans expand in size, their pores get opened and the caffeine molecules become mobile. At this point carbon dioxide is added at 100 atmospheres pressure to the pure water. Basically the water and the carbon dioxide are mixed to create the sparkling water. The carbon dioxide acts like a magnet and attracts all the caffeine molecules that became movable. When the caffeine is captured by the carbon dioxide, this is removed. The carbon dioxide is very selective and it doesn't touch the carbohydrates and proteins of the coffee beans, which would damage quality. When the carbon dioxide has finished removing the caffeine, the coffee seeds are dried naturally. Carbon dioxide is then recycled and caffeine is sold for other commercial uses.
carbony A roast-related flavor term, referring to burnt flavors from dark roast levels. For some this is a pleasant flavor if residual sweetness is present, but plain carbon flavor is usually not pleasant.
Catimor Catimor is a broad group of cultivars derived from HdT (Hibrido de Timor) and Caturra cross, highly productive, sometimes with inferior cup flavor. The main issue is the
Catuai Catuai is a high-yield Arabica cultivar resulting from a cross of Mundo Novo and Caturra. The tree is short, with lateral branches forming close angles to the primary branches. It is robust and can tolerate areas with strong winds or rain. Catuai requires fertilization and care. It was developed by the Instituto Agronomico do Campinas in Brazil in the '50s and '60s, and is widely used in Brazil and Central America. There are yellow-fruited and red-fruited types, and many selections. In 2000, a new type called Ouro Verde was released with more vigor than Red Catuai.
Caturra Caturra is an Arabica cultivar discovered as a natural mutant of Bourbon in Brazil in 1937. It has a good yield potential, but was not ideal for Brazil growing conditions (due to lack of hardness and too much fruit in 3-4 production cycles). However, it flourished in Colombia and Central America and had good cup characteristics, possibly displaying citrus qualities. At higher altitudes quality increases, but production decreases, and it sometimes requires extensive care and fertilization. It has a good cup quality, and perhaps shows a more citric acidity, and lighter body than Bourbon.
CBB Coffee Berry Borer is a pest that burrows into the coffee seed, and a major problem in many coffee origins. In Latin America it is known as Broca
Cellulose Cellulose is the principle fiber of the cell wall of coffee. It is partially ordered (crystalline) and partially disordered (amorphous). The amorphous regions are highly accessible and react readily, but the crystalline regions with close packing and hydrogen bonding may be completely inaccessible. Native cellulose, or cellulose 1, is converted to polymorphs cellulose III and cellulose IV when exposed to heat. Coffee's structure is a well developed matrix enhancing the mass uniformity and aiding in the even propagation of heat during roasting. Cellulose exists in coffee embedded in lignocellulose (an amorphous matrix of hemicellulose and lignin containing cellulose), making up the matrix cell walls. Hemicellusloses are polysaccharides of branched sugars and uronic acids. Lignin is of special note because it is a highly polymerized aromatic. Severe damage occurs to the cell walls of the matrix at distributed temperatures above 446 degrees F and bean surface temperatures over 536 degrees F The actual temperature values will change due to varying levels of other constituents. Second crack, associated with darker roasts, is the fracturing of this matrix, possibly associated with the volatilization of lignin and other aromatics. Under controlled roasting conditions, the bean environment temperature should never exceed 536 degrees F. A wider safety margin would be achieved by limiting the maximum environment temperature to 520 degrees F. These temperature limits minimize damage to the cell matrix and enhances cup complexity, roasting yield, and product shelf life.
Cenicafe Cenicafe promotes research in coffee to aid Colombia coffee farmers, as part of the FNC
chaff Chaff is paper-like skin that comes off the coffee in the roasting process. Chaff from roasting is part of the innermost skin (the silverskin) of the coffee fruit that still cling to the beans after processing has been completed.
Channeling Channeling refers to the formation of small water jets during espresso brewing due to poorly distributed grounds. When high-pressure water is forced toward the espresso puck, the water attempts to find the path of least resistance out, so if the coffee is not distributed evenly the water may form a small "channel" through the puck, rather than being forced through the coffee. This will result in a watery, under-extracted cup.
Charrieriana This is a new caffeine-free coffee from Cameroon, the first record of a caffeine-free species from Central Africa. Cameroon is a center of diversity for the genus Coffea and such wild species are potentially important in breeding programs. In this case the new species could be used for breeding of naturally decaffeinated beans. Type Locality: Bakossi Forest Reserve, Tombel Division, Southwest Province, Cameroon. Etymology: "The name is in honour of a Professor A. Charrier, who managed coffee breeding research and collecting missions at IRD during the last 30 years of the 20th century."
Cheesy A coffee that has a kitchy quality, or literally cheese-like flavors in the cup. The second is actually a trade term, when their is a dairy-like sourness in the cup. We had this once in a Jamaica coffee. Also see Cappy
Chemex Coffee Brewer A glass filter drip coffee brewer with an extended brew time.
Chemical Process A decaffeination method where beans are soaked in hot water, which is then treated with a chemical that bonds to caffeine (either methylene chloride or ethyl acetate).
Cherimoya The fruit is fleshy and soft, sweet, white in color, with a sherbet-like texture, which gives it its secondary name, custard apple. Some characterize the flavor as a blend of banana, pineapple, and strawberry. Others describe it as tasting like commercial bubblegum. It is native to the Andes
Chicory Chicory was a popular coffee substitute and economizer for 2 centuries, back when coffee was more prized, and pure coffee was a luxury. In that time, it became a matter of cultural preference to use chicory in coffee, in the United States it was synonymous with New Orleans coffee. The specific taste of famous New Orleans brands is due to the blend of dark roasted coffee and chicory. But when I worked in New Orleans I found how stale the coffee was, and what low quality chicory was being used. If you use high quality coffee, like our French Roast Blend that you roast yourself, and a true imported French Chicory, you will get optimal results with that typical New Orleans Cafe au Lait cup character. Read the review below for the ratio of coffee-to-chicory typically used. I was always told that Chicory was related to the Radish and that is what I wrote on this page. But you savvy readers won't let me make such errors: Chicory is in the plant family Compositae or Asteraceae, the sunflower family. Think Jerusalem artichoke. Radish is in the Brassicaceae or Cruciferae family, the mustard family. See our Chicory Offerings for more information.
Chirimoya In coffee, a specific multi-faceted tropical fruit flavor found in Chirimoya (Cherimoya). Wikipedia: Some characterize the flavor as a blend of banana, pineapple, papaya, peach, and strawberry. Others describe it as tasting like commercial bubblegum. Similar in size to a grapefruit, it has large, glossy, dark seeds that are easily removed. When ripe, the skin is green and gives slightly to pressure, similar to the avocado.
Chlorogenic Acid Chlorogenic acids (CGAs) are important to coffee flavor, contributing to flavor when in the proper balance and level. They are a group of phenolic acids esterified to quinic acid, and account for up to 10% of the weight of green coffee. They are known to have antioxidant properties. Like all acids, its levels are reduced in roasting; darker roasts result in less acidity in the cup. Since it reduces to quinic acid in roasting, and quinic acid in high levels results in perceived bitterness and sourness, too much CGA is not desireable.
Chocolate Chocolate is a broad, general flavor or aroma term reminiscent of chocolate. But what type? There are so many forms of chocolate, either in its pure state, or as part of another confection. Chocolate flavors are often a "roast taste", and are dependent on the degree of roast. Look for more specifics; bittersweet chocolate, bakers chocolate, toffee and chocolate, rustic chocolate, cocoa powder, Dutch cocoa, cocoa nibs, Pralines and chocolate, milk chocolate, Mexican hot chocolate, etc. etc.
Chop Chop is an old term for the lot mark on a coffee bag, since the numbers are divided with forward slash marks. That is now correctly called the ICO number. Chops do not refer to music!
Citric Acid Citric acid is, in moderate amounts, a component of good, bright coffees. It is a positive flavor acid in coffee that often leads to the perception of citrus fruits and adds high notes to the cup. Fine high-grown arabica coffees have more citric acid than
Citrus Qualities in coffee that are reminiscent of a citrus fruit; orange, lemon, grapefruit, kumquat, etc. Usually these terms imply a brightness in the coffee, a more acidic, wet-processed type of coffee.
Clean Cup Clean cup refers to a coffee free of taints and defects. It does not imply sanitary cleanliness, or that coffees that are not clean (which are dirty) are unsanitary. It refers to the flavors, specifically the absence of hard notes, fruity-fermenty flavors, earthy flavors or other off notes.
Coffee Berry Disease A fungal disease that results in cherry dying and dropping to the ground before it is ripe. It is a serious problem in Kenya, and most of East Africa, and can be transmitted by the coffee seed.
Coffee Brewing The process of making an infusion of roasted, ground coffee beans. In the most basic sense, hot water is added to coffee ground to produce a drink. Some brewing methods (espresso, turkish coffee) produce a dense concentrate while other methods (filter drip, vacuum pot) produce a cleaner, more refined cup. Coffee brewing methods have changed much over time and are likely to continue to do so.
Coffee Cherry Coffee is a fruit from a flowering shrubby tree; we have come to call the whole fruit coffee cherry. It usually ripens to a red color, although some types ripen to yellow, and is smaller than most real cherries, but close enough. In other regards, the tree and fruit do not resemble a cherry. Old European texts often refer to the fruit as the "coffee berry". Coffee cherry can also be a flavor accent in the cup.
Coffee Crop Cycle The Coffee Crop Cycle refers to the period of growth of the cherry to maturation and harvest. Coffee has one harvest period a year, although in some there is a second small harvest. From the flowering, to the fruit development and ripening, the coffee fruit is on the tree for a long period. The crop cycle differs for many origins. We have a chart that offers a rough estimate , but this too varies from year to year.
Coffee Diseases Coffea Arabica is susceptible to a host of diseases, such as Coffee Berry Disease (CBD), Coffee Berry Borer (CBB, also known as Broca), and Coffee Leaf Rust (CLR). There are many others, but these diseases do the most economic damage to the coffee crop worldwide.
Coffee Filter A mechanism (usually paper or a metal or nylon mesh) for straining coffee ground from brewed coffee.
Coffee Grading Coffee grading is the technical skill of evaluating and scoring of physical coffee defects in green coffee. The sample is 300 grams, and there is a particular point system to score the intensity of each defect, based on the full "black bean" which equals 1. Size is also rated in the unit of 1/64ths, so 17 screen means 17/64ths.
Coffee Grinder A device for grinding coffee beans. Grinders can be broadly classified into blade grinders and burr grinders.
Coffee Growing Regions Coffee is grown in a belt around the world - roughly from the Tropic of Cancer to the Tropic of Capricorn, in 50 different countries. For specialty grade coffee, altitude ranges from 1800- 6000 feet. The optimum temperature is between 15-24ºC (59-75ºF) year round. Soils and rainfall vary widely from one origin to the next - or even within a large coffee producing country like Ethiopia.
Coffee Research The study of the agronomy of coffee, its chemistry, or other improvements. There are coffee research organizations throughout the world. In Central America, there are
Color Sorting Sorting coffee by removing beans that have a color that indicates a defect. Color coffee sorting is often done by an optical sorting machine, which has a high speed camera that watches a stream of beans and actuates a jet of air to remove off-colored beans. Most high quality coffee also involves hand color sorting, which is traditionally done by women sitting either at conveyor belts or at tables.
complex The co-presence of many aroma and flavor attributes, with multiple layers. A general impression of a coffee, similar to judgments such as "balanced" or "structured"
Conduction The transfer of heat between matter. In coffee, conduction heating is contrasted with convection heating, which occurs in a moving fluid.
Conical Burr Grinder A conical burr grinder has two cone-shaped burrs that sit inside one another; coffee bean fall between the two burrs and are ground between them. Produces a much more even grind than a whirley blade grinder. Concical burr mills are very even at medium and fine grinds, less so at coarse grinds. The mill can be electrical or cranked by hand.
Convection Transfer of heat through the bulk movement of a fluid. In the case of coffee roasting, we discuss convection in the context of heated air moving as a fluid through a roast chamber.
Conventional Conventional means that a coffee is not organic certified, in the coffee trade.