Pure Gluten Free Tapioca Starch Flour 500g Tapioca is a pale, almost flavourless fine starch made from the roots of the cassava or manioc plant. Cassava roots form tubers similar to potatoes & are a good source of carbohydrate. The starch itself can be used as a thickener for sauces & gravies & is also blended with other gluten-free flours for baking. When used for baking it helps to soften breads & cakes, keep the texture light & also to help them brown nicely.