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In the case of coffee, the
decaffeination processes are performed on unroasted (green) beans, although the
method can vary somewhat. It generally starts with the steaming of the beans.
They are then rinsed in solvent that contains as much of the chemical
composition of coffee as possible without also containing the caffeine in a
Roasting coffee transforms the chemical and physical properties of green coffee
beans into roasted coffee products. The roasting process is integral to
producing a savory cup of coffee. When roasted, the green coffee bean changes in
color, taste, smell and density. It takes heat to spark the chemical reactions
that turn carbohydrates and fats into aromatic oils, burn off moisture and
carbon dioxide, and alternately break down and build up acids, unlocking the
characteristic coffee flavor. Grades of coffee roasting - from right: unroasted
or green, light, cinnamon, medium, high, city, full city, Italian, and French.
The roasting process tends to take place close to where it will be consumed.
The process From Coffee Bean to Coffee Cup
Coffee is prepared from roasted seeds, otherwise
known as coffee beans , Coffee beans are one of the largest export products
for some countries. Some of these are cultivated in Latin America ,
Southeast Asia , and Africa . Once ripe , coffee berries are picked ,
processed , and dried . Coffee can be prepared and presented in a variety
Coffee beans grounding
The vast majority of coffee is roasted commercially on a large scale,
but some coffee drinkers roast coffee themselves in order to have more
control over the freshness and roast level of the beans.
Coffee beans are ground, Brewing methods which expose coffee grounds to
heated water for longer require a coarser grind than faster brewing
methods. Beans which are too finely ground for the brewing method in
which they are used will expose too much surface area to the heated
water and produce a bitter, harsh, "over-extracted" taste. At the other
extreme, an overly coarse grind will produce weak coffee unless more is
used. Uniformly ground coffee is better than the mixture of sizes
produced by a mill with chopping blades.
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Storage: Store in a sealed container in a refrigerator, coffee can loses its
aroma quickly after roasting.
Caffeine: This alkaloid gives coffee its stimulating quality
Products: Coffea arabica , Coffea , coffee roaster Decaffeinated coffee or "decaf" is coffee that has had most of the
caffeine removed. By weight, the amount of caffeine found naturally in coffee is
only about 1% for the Arabica and 2% for the Robusta coffee beans.
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