Bob's Red Mill Arrowroot Starch/Flour is a wonderful grain free, paleo-friendly, gluten free thickener and emulsifier. It comes from the root of the arrowroot plant, a large periennal herb. Use Arrowroot starch one-for-one in place of cornstarch in your recipes. Added to baked goods, it creates a softer, lighter texture. It will not turn your sauce or gravy cloudy. Great for puddings, gravies, pie fillings, and sauces.