what cornstarch
What is cornstarch? Cornstarch is a fine, powdery starch that is made out of corn. The cornstarch is actually made from the endosperm of the corn, which makes up most of the kernels that we eat when enjoying popcorn or corn on the cob. Cornstarch, also sometimes called cornflour, is produced by grinding, washing and drying the endosperm of the corn until it reaches that fine, powdery state. Cornstarch is gluten free. Cornstarch has many culinary uses, but it is most often used as a thickener for sauces, gravies and fruit pie fillings. Cornstarch thickens very quickly and easily, and forms a clear sauce after cooking, rather than an opaque one.