An ice cream float is a beverage consisting of ice cream that is placed in a soft, fizzy drink. One of the most popular varieties of the beverage is a root beer float. The origins of ice cream floats date back to the 19th century. It was invented in Philadelphia by Robert Green, a soda shop operator who ran out of cream and decided to use ice cream instead of it.

Shortly after, his daily earnings soared from $6 to $600. With the popularity of ice cream floats, it is no wonder that there are numerous variations such as chocolate ice cream soda, coke floats, purple cow, butterbeer, and Boston cooler.

Today, the beverage is considered an all-American classic, enjoyed in diners and bars throughout the United States and beyond.