Kola nut is a caffeine-containing nut of two evergreen trees of the cocoa family. Kola nut is a relative of the Malvaceae plant family. The Cola acuminata is an evergreen tree of about 20 meters in height, and has long and ovoid leaves pointed at both the ends that have 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.