Glycerin, sometimes spelled glycerine, is a clear, thick liquid that has a faint sweet taste. It is often used in pharmaceuticals and beauty products like soaps and lotions to help moisturize the skin, but it also has food applications. Because it readily absorbs moisture from the air, it is often used to keep foods moist and soft. It is also sometimes used as a sugar substitute. When used in candy-making, it can add a subtle sweetness, keep candy soft, and help improve the texture. Be sure to buy food-grade or food-safe glycerin for baking and candymaking purposes.
An example of a recipe that uses glycerin is this recipe for rolled fondant.
Alternate Spellings: glycerine