A slushy is a flavored ice beverage with a liquid consistency, akin to granitas but less solid. Synonyms include slush, slurpee, frozen beverage, and frozen drink. Slushies can be carbonated or non-carbonated, with the former sometimes referred to as a frozen carbonated drink or beverage. Its defining characteristic is the blend of flavored ice and liquid, creating a semi-frozen, drinkable treat.
In 1958, Omar Knedlik, experiencing soda machine issues, stored his soda in a freezer, resulting in a slushy consistency. He then sold the slush to his customers, marking the unintentional beginning of the slushy drink phenomenon.
In 1960, Omar Knedlik partnered with John Mitchell to start mass-producing slushy machines, expanding the reach of the icy beverage.
In 1962, Knedlik secured a patent for his slushy machines, protecting the design and functionality of the invention.
In 1965, 7-Eleven purchased three ICEE machines and signed a licensing deal with ICEE, which allowed them to adopt the name "Slurpee" for their version of the frozen drink in American 7-Eleven stores.