Glycerol monostearate is commonly known as GMS, It is a white, odorless, and sweet-tasting flaky powder that is hygroscopic. It is a glycerol ester of stearic acid. It contains both water and oil soluble groups in one molecule which enables it to be a very effective emulsifier. GMS is of high nutritive value, non toxic and therefore very suitable for use in food formulations. It belongs to the class of non-ionic emulsifiers.