Arrowroot flour is derived from the root of a West Indian plant. It can be used in exchanged recipes or mixes cup for cup with corn starch, so it makes a great substitute if you are allergic to corn. Arrowroot flour is an excellent thickening agent in sauces and lightens up gluten free or Paleo-friendly baked goods. The Authentic Foods Arrowroot Flour is extracted from the root of the marantha arundinacea which is indigenous to the West Indies. The aborigines from the West Indies, also known as Arawaks, used this powder to draw out toxins from people who were wounded by poison arrows. Thus, the name arrowroot came to be.Arrowroot Flour is perfect to use in gluten-free and corn-free cooking. It can be used in the following ways: Replacement for Cornstarch (2 teaspoons Arrowroot flour = 1 tablespoon Cornstarch) Flour substitute alone or mixed with rice flour for gluten-free baking. If used alone, the substitution is 1 teaspoon Arrowroot flour = 1 tablespoon wheat flour. Thickening agent for sauces, fruit pie fillings, glazes, and puddings.