Coffee slushy

A slushy is a type of beverage made of flavored ice and a drink, similar to granitas but with a more liquid composition. It is also commonly called a slush, slurpee, frozen beverage, or frozen drink. A slushie can either be carbonated or non-carbonated; the carbonated version is sometimes called a frozen carbonated drink or frozen carbonated beverage. The first carbonated slushie machine was invented by Omar Knedlik, the owner of a Dairy Queen franchise. In the late 1950s, the soda machine at his restaurant experienced constant issues. Sometime in 1958, his machine completely failed and he decided to store his soda in his freezer, where it became slushy when pulled out. He decided to sell the slush to his customers, and the drink soon became popular. Knedlik decided to pursue making slushies and commissioned Ruth Taylor to create the name and logo of The Icee Company. These early machines used an automotive air conditioning system and worked by combining and freezing a flavor mix, water, and carbon dioxide. In 1960, Knedlik partnered with John Mitchell to mass-produce slushy machines, gaining a patent in 1962. In 1965, 7-Eleven bought 3 ICEE machines and signed a licensing deal with ICEE where 7-Eleven would adopt the Slurpee name for their products and they were restricted to selling the Slurpee in American 7-Eleven stores. By the 1970s, Slurpee machines could be found in every American 7-Eleven store.

Source: Wikipedia