In fact, it has nothing to do with the material, but with the origin of its name. Its name is taken from croquette in French, and its Japanese pronunciation is koroke, which sounds like "coke cake" Coke refers to a carbonated beverage with sweet taste, caffeine but no ethanol. Flavors include vanilla, cinnamon, lemon and so on. The name comes from one of the early materials of cola: cola fruit extract. The most famous cola brands are Coca-Cola and Pepsi. Drinking coke is originally a consumption behavior that is no different from drinking other drinks.