Coffee is one of the world's favourite beverages because of caffeine, an alkaloid that so many of us find addictive. But we don't choose our coffee on strength alone. As any coffee devotee knows, bean type has long been associated with coffee quality The best beans, cultivated in the right location, soil conditions and climate, come at premium prices. However, it is the roasting process that really sets up the organic chemistry to produce so much of the flavour and aroma.
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