可乐，为什么是黑色的？

Cola's color comes from a special syrup. 可乐的颜色来自一种特殊的糖浆。 That syrup is caramel color. 这种糖浆叫焦糖色。 Caramel color is made by heating sugar. 焦糖色是糖加热后变出来的。 It is deep brown, almost black. 它是深褐色，黑沉沉的。 A drop of it turns the whole drink dark. 一滴进去，整瓶饮料都变黑。 The taste of cola comes from other flavors. 可乐的味道来自别的配料。