Grades of Corn Syrup Corn syrup is anespecially versatile ingredient in food man-ufacturing because its sweetness and vis-cosity can be varied simply by controllingthe thoroughness of the enzymatic diges-tion of starch into sugars. The most com-mon consumer grade of corn syrup is about20% water, 14% glucose, 11% maltose,and 55% longer glucose chains. It is onlyCorn