<P> Technological innovations such as these have introduced various food additives into ice cream, the notable one being the stabilizing agent gluten, to which some people have an intolerance . Recent awareness of this issue has prompted a number of manufacturers to start producing gluten - free ice cream . </P> <P> The 1980s saw thicker ice creams being sold as "premium" and "super-premium" varieties under brands such as Ben & Jerry's, Chocolate Shoppe Ice Cream Company and Häagen - Dazs . </P> <P> Ice cream is a colloidal emulsion having dispersed phase as fat globules . It is an emulsion which is in the end made into foam by incorporating air cells which is frozen to form dispersed ice cells . In the composition of ice cream ice crystals are of most importance as they give a desirable mouth feel . Ice cream is composed of water, ice, milk fat, milk protein, sugar and air . Water and fat have highest proportions by weight creating an emulsion . The triacylglycerols in far are non polar and will adhere to itself by van der Waals interactions . Water is polar thus, emulsifiers are needed for dispersion of fat . Also ice cream has a colloidal phase of foam which helps in light texture . Milk proteins such as casein and whey protein present in ice cream are amphiphilic, can adsorb water and form micelles which will contribute to consistency . Sucrose which is disaccharide is usually used as a sweetening agent . Lactose which is sugar present in milk will cause freezing point depression . Thus, on freezing some water will be unfrozen and will not give hard texture . </P> <P> Before the development of modern refrigeration, ice cream was a luxury reserved for special occasions . Making it was quite laborious; ice was cut from lakes and ponds during the winter and stored in holes in the ground, or in wood - frame or brick ice houses, insulated by straw . Many farmers and plantation owners, including U.S. Presidents George Washington and Thomas Jefferson, cut and stored ice in the winter for use in the summer . Frederic Tudor of Boston turned ice harvesting and shipping into a big business, cutting ice in New England and shipping it around the world . </P>

What kind of fat is in ice cream