Rice flour is a form of flour made from finely milled rice. Rice flour is a common substitute for wheat flour in cakes and biscuits since it's naturally gluten-free. It is also used as a thickening agent in recipes that are refrigerated or frozen.
It's used to make rice noodles and also the main ingredient in the South Indian appams, a pancake style dish.
You add it with other flours to bake cookies, crackers, pancakes, waffles and other desserts. Since Rice flour is gluten-free, it's less suited to bake bread. It is very suitable to sift it over your bread dough. It will dry the surface without making the dough too dry.
Rice flour gives a crunchy touch without giving your food a pronounced taste.