![]() ![]() ^ US 3044878, Knedlik, Omar, "Process for the Preparation of a Beverage", issued."Slushies Are the World's Greatest Accident". "The Brain-Freezing Science of the Slurpee". ^ Precker, Michael (October 16, 1991).Brands that produce non-carbonated slushes include Slush Puppie, and Del's. The brands Slurpee, ICEE, Thirst Buster, and Froster are known for their carbonated slushes. There are several well-known brands of slushies. ![]() Some slushies have additives to make the freezing temperature of the mix lower, so that the drink can be served much colder than a water slush drink. In this way, a soft, wet slurry mixture is formed. The slush machine stirs or rotates the mixture at a constant speed so that the sugar and water molecules bond together before the water gets a chance to freeze. The sugar acts as an antifreeze in the solution. To prevent the mixture from freezing solid, there must be between 12%-22% of sugar present in the solution. Slush is made by a mixture of sugar and water. Supercooled slushies can be made by pouring a soda into a bottle, shaking it and putting it into a freezer, waiting 3 to 3.5 hours, and then either releasing pressure and flipping the bottle, slowly opening the bottle and pouring it out, or adding a piece of ice into the soda. The product required a special vending machine to store the bottles in a supercooled state so they would turn to slush upon opening. Supercooled Sprite was briefly marketed by Coca-Cola in the United Kingdom. The first slushies in the late 1950s and early 1960s were made by supercooling. Slushies can also be produced by supercooling. 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. This product is often "wetter" than a carbonated slushy machine. 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. Non-carbonated slushies are made by freezing a non-carbonated juice or other liquid. Carbonated slushies tend to be "drier" than their non-carbonated counterparts. Carbonated slushie machines often freeze to a temperature well below the freezing point of water, but the combination of pressure up to 40 psi (2.8 bar), sugar, the carbon dioxide mixture that freezes −80 ☌ (−112 ☏), and the constant stirring prevent the mass from freezing solid. The mixture freezes to the wall of the cylinder, then is scraped off by a rotating dasher, which also keeps the mixture uniformly mixed. This mixture is then injected into a cylinder surrounded by freezer coils. Concentrated flavor syrups are mixed with filtered water, then carbonated. Production Slush machines in ItalyĬarbonated slushies are made in machines similar to regular soda fountains. Slushies made using alcoholic drinks are called frozen alcoholic drinks. They can also come in a variety of flavors ranging from fruits such as strawberry, watermelon, and pineapples, to sodas such as Coca-Cola, Sprite, and Fanta, and other flavors like caramel, chocolate, vanilla, and even ice coffee. Slushies are either carbonated or non-carbonated. By the 1970s, Slurpee machines could be found in every American 7-Eleven store. 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. In 1960, Knedlik partnered with John Mitchell to mass-produce slushy machines, gaining a patent in 1962. These early machines used an automotive air conditioning system and worked by combining and freezing a flavor mix, water, and carbon dioxide. Knedlik decided to pursue making slushies and commissioned Ruth Taylor to create the name and logo of The Icee Company. He decided to sell the slush to his customers, and the drink soon became popular. Sometime in 1958, his machine completely failed and he decided to store his soda in his freezer, where it became slushy when pulled out. In the late 1950s, the soda machine at his restaurant experienced constant issues. ![]() The first carbonated slushie machine was invented by Omar Knedlik, the owner of a Dairy Queen franchise. ![]()
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