Unsalted Butter

A type of butter that does not contain any salt. Unsalted butter is often prefered for use in cooking and baking because it does not contain any salt, which may tend to alter the flavor of the food when added to some recipes. Since salt acts as a preservative, butter without salt will be more perishable. Clarified unsalted butter is often used for cooking foods requiring higher temperatures, since this type of butter does not contain water or milk solids.