Powdered Sugar

Powdered Sugar. Cane or beet sugar (q.v.) that has been ground in special mills and screened through fine bolting cloths to yield varying degrees of fineness. Finely powdered sugars normally contain 3% of redried corn starch (q.v.) or 1% of tricalcium phosphate to prevent caking during storage. They are available in various degrees of fineness, designated by a series of X's, that range from the extremely fine-grained 12X fondant (q.v.) sugar through ultrafine confectioners' 10X sugar to very fine (6X), fine (4X), medium and coarse grades.