Glucose Corn Syrup

Appears in
Professional Cooking: 10th Edition

By Wayne Gisslen

Published 2025

  • About

Corn syrup is a liquid sweetener manufactured by breaking down the starch molecules of cornstarch into simple sugar molecules called glucose. Not all the starch is broken down during the process. Low-conversion syrups are only slightly sweet and are quite thick because of the high starch content. Regular, all-purpose corn syrups are medium-conversion syrups in which half the starch is converted to glucose.

Corn syrup aids in retaining moisture and is used in some icings and in candy making.