X is an African nut that grows in clusters, with each pod containing multiple nuts. The nuts can be red or white in color and have been used for centuries as a stimulant and thirst-quencher in Africa. They were a staple in the African diet before being incorporated into Western cola beverages. X contains caffeine, has no discernible odor, and has a flavor reminiscent of acorns. It is also occasionally spelled as kola.