A coffee bean is a seed of the coffee plant and the source for
coffee. It is the pit inside the red or purple fruit often referred
to as a cherry. Just like ordinary cherries, the coffee fruit is
also a so-called stone fruit. Even though the coffee beans are
seeds, they are referred to as "beans" because of their resemblance
to true beans. The fruits coffee cherries or coffee berries most
commonly contain two stones with their flat sides together. A small
percentage of cherries contain a single seed, instead of the usual
two. This is called a "peaberry". The peaberry occurs only between
*0 and *5% of the time, and it is a fairly common (yet
scientifically unproven) belief that they have more flavour than
normal coffee beans.Like Brazil nuts (a seed) and white rice,
coffee beans consist mostly of endosperm.