Vital Gluten Flour contains mostly gluten and very little starch. It is made from hydrated wheat flour that has been processed to remove everything but the gluten. The gluten is then worked back into a flour-like product. Due to the high gluten content, it makes a great addition to low-protein flours like whole wheat and rye and improves the elasticity and rise of bread dough while enhancing the chewiness of final loaves.