Glycerin

Also called glycerol, glycerin is an odorless, colorless, syrupy liquid that is chemically an alcohol and is obtained from fats and oils. Typically, glycerin is used to prevent crystallization of sugars in candies as well as to add sweetness and retain moisture in foods to preserve them longer. Glycerin is used commonly as a food additive in confectionery products such as cake icing and candies.