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
Crab ice cream his restaurant's food menu, although he admits that it is difficult to convince customers to try it. He also made it once for testing by food scientists in June 2011, and for an ice cream occasion at the Royal Institution in June 2001. Heladería Coromoto, a Mérida-based ice cream shop, which has the biggest variety of ice cream sold in the world, offers "Cream of Crab" as one of its ice cream flavours. In its country of origin, Japan, crab ice cream is marketed in Japanese as "Kani aisu". A Delaware-based ice cream parlor once attempted to make their own