High Quality Content by WIKIPEDIA articles! Decaffeination is the act of removing caffeine from coffee beans, mate, cocoa, tea leaves and other caffeine-containing materials. (While caffeine-free soft drinks are occasionally referred to as "decaffeinated", some are better termed "uncaffeinated": prepared via not adding caffeine during production.) Despite removal of caffeine, many decaffeinated drinks still have around 1-2% of the original caffeine remaining in them. In the case of coffee, various methods can be used. The process is usually performed on unroasted (green) beans, and starts with steaming of the beans. They are then rinsed with a solvent that extracts the caffeine while leaving the other essential chemicals in the coffee beans. The process is repeated anywhere from 8 to 12 times until it meets either the international standard of having removed 97% of the caffeine in the beans or the EU standard of having the beans 99.9% caffeine-free by mass. Coffee contains over 400 chemicals important to the taste and aroma of the final drink: it is, therefore, challenging to remove only caffeine while leaving the other chemicals at their original concentrations.

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