It is made by boiling the connective tissues, bones and skins of animals, usually cows and pigs. Once the boiling is done, the collagen will cool and make a jelly. As a food, gelatin is used to make jellied desserts; used in the preservation of fruit and meat, and to make powdered milk. Gelatin can also be used as glue for matches or glue for paper money. You can also find it is used as the syrup in medicine. Also known as medicine emulsions.