Cassava is a starchy food but contains no gluten. So for those on gluten free diets or those with Celiac s disease (intolerance for gluten), cassava is an ideal substitute to using wheat, rye or barley, which are very popularly used food items that contain gluten. A good substitute for wheat flour, is cassava flour, more nutrients, no gluten. Even products produced of this flour such as noodles or pasta, are gluten free. Hence using cassava flour ensures you can enjoy all sorts of foods, all the while maintaining a no gluten diet.