A smoothie (also known as a "smoothy") is a blended, chilled, sometimes sweetened beverage made from fresh fruit (fruit smoothie) or vegetables and in special cases can contain chocolate. In addition to fruit, many smoothies include crushed ice, frozen fruit, honey or contain syrup and ice ingredients. They have a milkshake-like consistency which is thicker than slush drinks. Unlike milkshakes, they usually don't contain ice cream, but can contain milk and yogurt (and a small number of smoothies do use ice cream).
其实主原料就那些。关键是efficient 的blender 和少许secret天然芳香料to add special favor.