What is a "kola nut"?

A kola nut, derived from the kola tree, is a bitter-tasting nut known for its high caffeine content and stimulating properties. Native to tropical regions, the kola nut has a distinctive appearance with its reddish-brown color and wrinkled texture. It is often utilized as a natural flavoring ingredient, lending its unique bitter taste to beverages such as cola drinks. Beyond its flavor, the kola nut has cultural significance in some regions, where it is exchanged as a traditional symbol of hospitality and used in ceremonies.