Rice flour (also known as rice powder) is a form of flour made from finely milled rice. It is distinct from rice starch, which is usually produced by steeping rice in lye. Rice flour is a particularly good substitute for wheat flour. Rice flour is also used as a thickening agent in recipes that are refrigerated or frozen since it inhibits liquid separation.
Rice flour is a great substitute for wheat flour since most wheat flour contains gluten — a protein that can irritate the digestive system or worse for anyone who is gluten intolerant. Rice flour is a popular thickening agent because it has the ability to prevent liquid separation. It works great in soups, sauces and gravies and is often used to make crackers, cakes and dumplings.