Coffee

Several species of Coffea may be grown for the seeds. Coffea arabicaaccounts for 75-80 percent of the world’s coffee production, while Coffea canephora accounts for about 20 percent.

The trees produce edible red or purple fruits called “cherries” that are described either as epigynous berries or as indehiscent drupes. The cherries contain two seeds, the so-called “coffee beans”, which—despite their name—are not true beans. In about 5-10% of any crop of coffee cherries, only a single bean, rather than the usual two, is found. This is called a peaberry, which is smaller and rounder than a normal coffee bean. It is often removed from the yield and either sold separately (as in New Guinea peaberry), or discarded.

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