The first carbonated slushie machine was invented by Omar Knedlik, the owner of a Dairy Queen franchise.

[4] 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.

Many modern non-carbonated slushy machines use a spiral-shaped plastic dasher to scrape crystals off a freezing cylinder, often integrated into a clear hopper.

Machines for producing these do not require a pressure chamber, and as a result, they are much cheaper and easier to maintain due to their simpler mechanics.

The product required a special vending machine to store the bottles in a supercooled state so they would turn to slush upon opening.

The brands Calippo Burst, Slurpee, ICEE, Thirst Buster, and Froster are known for their carbonated slushes.