A fine white starch from corn. It thickens sauces to a clear gloss, coats sliced meat so it stays tender in a stir-fry, and makes fried coatings crisp.
To thicken a sauce, first mix the cornstarch with cold water, then slowly pour it into the wok.
Tips
usage
玉米淀粉 is cornstarch, the fine white thickener. Coarse cornmeal is 玉米面, and 玉米粉 can mean either, so recipes that need a thickener name 玉米淀粉. Cantonese and Hong Kong recipes call cornstarch 生粉.