Egg cream

An egg cream is a cold beverage consisting of milk, carbonated water, and flavored syrup , as a substitute for an ice cream float. Ideally, the glass is left with 2⁄3 liquid and 1⁄3 foamy head. Despite the name, the drink contains neither eggs nor cream. The egg cream is almost exclusively a fountain drink. Although there have been several attempts to bottle it, none have been wholly successful, as its refreshing taste and characteristic head require mixing of the ingredients just before drinking. The peculiarity that an egg cream contains neither eggs nor cream has been explained in various ways. Stanley Auster, who claims that his grandfather invented the beverage, has said that the origins of the name are "lost in time."

Source: Wikipedia