Ice cream churns the ice cream mixture while cooled inside a household freezer. Some more expensive models have an inbuilt freezing element. A newer method is to add liquid nitrogen to the mixture while stirring it using a spoon or spatula for a few seconds; a similar technique, advocated by Heston Blumenthal as ideal for home cooks, is to add dry ice to the mixture while stirring for a few minutes. Some ice cream recipes call for making a custard, folding in whipped cream, and immediately freezing the mixture. Another method is to use a pre-frozen solution of salt and water, which
Ice cream float Ice cream float An ice cream float or ice cream soda (United States, United Kingdom, Canada, South Africa and East Asia), coke float (United Kingdom and Southeast Asia), or spider (Australia and New Zealand), is a chilled beverage that consists of ice cream in either a soft drink or in a mixture of flavored syrup and carbonated water. When root beer and ice cream are used together to make the beverage, it is typically referred to as a root beer float (United States and Canada). The ice cream float was invented by Robert McCay Green in Philadelphia, Pennsylvania, in 1874