Corn starch, maize starch, or corn flour is the starch derived from corn grain. The starch is obtained from the endosperm of the kernel. Corn starch is a common food ingredient, often used to thicken sauces or soups, and to make corn syrup and other sugars. Professional grade corn starch, is used and highly recommended. Starch is most often used as a thickening agent for sauces, gravies, glazes, soups, casseroles, pies. Corn starch happens to be flavorless.