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 bar Ice cream bar An ice cream bar is a frozen dessert on a stick or a candy bar that has ice cream in it. The coating is usually a thin layer of chocolate used to prevent the melting and dripping of ice cream. The ice cream bar is often confused with the popsicle, which does not contain any ice cream. Originally called "I-Scream-Bar", Ice cream bar, or, the Eskimo Pie chocolate bar was invented in Iowa by a pharmacy owner named Chris Nelson who was inspired by a boy Douglas Ressenden who could not decide between candy and ice cream.