What is a black and white milkshake?

A black and white milkshake is a classic American dessert drink that combines vanilla and chocolate flavors. It is made by blending chocolate syrup or cocoa powder, vanilla ice cream or milk, and sometimes whipped cream or a cherry on top. The name "black and white" refers to the contrast between the dark chocolate and light vanilla colors. The milkshake is commonly found in diners, ice cream shops, and fast-food restaurants throughout the United States.