Coffee Glossary
Acidity
Acidity, which is a desirable characteristic in coffee, is the pleasant sharpness which coffee produces around the edges of the tongue and in the back of the mouth. Without acidity, coffee will tend to taste flat and dull.
Arabica
One of the two basic species of coffee trees; flat coffee bean with rather sharp edges; accounts for 75% of the world coffee production. The main suppliers are Brazil, Colombia and Central America.
Aroma
Aroma refers to the smell or bouquet of the coffee and contributes to the flavours we discern on our palates.
Blend
A mixture of one or more varieties or species of coffee beans (Arabicas and Robustas). By mixing different types of coffees one can create different tastes and flavours.
Body
Body refers to the physical properties (heaviness, thickness, richness) of coffee as perceived in the mouth during and after ingestion.
Caffeine / Decaffeinated Coffee
One of the 800 components (so far known) in coffee is caffeine. It has a stimulating effect on the heart, brain and blood pressure, keeps you going, neutralises the depressant effects of alcohol.
Arabica beans contain between 1% and 3% caffeine, Robusta beans contain between 2% and 4 %.
There are three processes during which 97 percent or more of the bean’s naturally occurring caffeine is removed.
Cherries
The fruit of the coffee tree which carries the seeds (coffee beans).
Extraction
Often called the brewing process. The coffee flavouring material is released from roasted and ground coffee particles.
Hot water breaks the cell walls of the coffee particles and makes it permeable through which the required aroma contents defuse.
Flavour
Flavour refers to the overall perception of coffee in the mouth. Aroma, acidity and body are all components of flavour.
Typical flavour characteristics are for example smoky, nutty, sweet, earthy, etc.
Grinding
The process of breaking down the coffee bean into small particles to aid extraction of flavour components during brewing.
The choice of particle size distribution is selected to give the optimum extraction in a limited time.
Roasting
The application of heat to green coffee beans for the purpose of bringing out certain flavour characteristics.
The roasting degree is one of the dominant parameters in defining the final quality and taste of coffee.
When roasting the coffee in hot air (up to 500C), moisture will evaporate, the sugars caramelise and the colour changes from yellowish to brown, all within 4–6minutes.
Robusta
One of the two basic species of coffee trees; slightly bulb-shaped coffee bean: accounts for about 25% of world coffee production.
The main suppliers are Africa and Indonesia. |