The cola nut is a caffeine-containing fruit from the cola tree, native to tropical Africa. It is typically oval-shaped and can be red, green, or yellow. The nut is known for its bitter flavor and is often used to flavor soft drinks, particularly in the original recipes of cola beverages. Traditionally, the cola nut has been used in various cultures for its stimulating properties. It is often chewed for energy and is also used in traditional medicine. The nut contains caffeine, theobromine, and tannins, contributing to its stimulating effects and potential health benefits.