Glyceryl monostearate — GMS, often sold to cooks as "Glice" — is a monoglyceride emulsifier: the glycerol ester of stearic acid. A fat-loving powder, it is the additive that lets a pure oil be whipped into a stable, airy foam, and the quiet workhorse that keeps bread soft, ice cream smooth and margarine from weeping.
PAIR's modernist science — how much to use, how it behaves with heat, and what makes it fail — is a Pro feature. The description, nutrition, history and facts stay free.