Gelatin is a colorless and flavorless substance derived from collagen, a protein found in animal bones and connective tissue. It is commonly used as a gelling agent in food, pharmaceuticals, photography, and cosmetic manufacturing. Two common forms of gelatin are AGAR and JELLY. AGAR is a type of gelatin made from seaweed and is used to make jellies, custards, and other desserts. JELLY is a type of gelatin made from fruit juice and sugar and is used to make jams, jellies, and other confections.