The kola nut is the fruit of the kola tree, a genus (Cola) of trees native to the tropical rainforests of Africa. The caffeine-containing fruit of the tree is sometimes used as a flavoring ingredient in beverages. Kola nut is a caffeine-containing nut of evergreen trees of the genus Cola, primarily the species Cola acuminata and Cola nitida. Cola acuminata is an evergreen tree of about 20 meters in height, and has long, ovoid leaves pointed at both the ends with a leathery texture. The trees have yellow flowers with purple spots, and star-shaped fruit. Inside the fruit, about a dozen round or square seeds can be found in a white seed shell. The nut's aroma is sweet and rose-like. The first taste is bitter, but sweetens upon chewing. The nut can be boiled to extract the cola.
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