The main ingredients of a vanilla Frosty from Wendy's are milk, corn syrup, cream, whey, guar gum and nonfat milk, as of 2015. The chocolate version consists of the same ingredients with the addition of alkali processed cocoa. Other ingredients include mono and diglycerides, cellulose gums, and artificial flavors.
The Frosty was an original creation of Wendy's founder Dave Thomas. The original Frosty, which is a mix of chocolate and vanilla, was on the menu of the first Wendy's restaurant, founded in 1969. In 2006, Wendy's added the vanilla Frosty to the menu. The ingredients have not changed much over the years, except for efforts to lower the amount of butterfat. A small chocolate Frosty has 340 calories, and a small vanilla Frosty has 330 calories.
With an ice cream maker or a blender, home cooks can make a replica of the Frosty. The recipe calls for 16 ounces of whipped topping mixed with 14 ounces of sweetened condensed milk. The next step involves pouring the mixture into an ice cream maker, adding 1 gallon of chocolate milk and turning on the machine. The thickness of the chocolate milk determines the thickness of the Frosty. Keeping the ice cream bowl in the freezer for 24 to 48 hours prior to making the drink can improve the result.