Vital wheat gluten is a flour that is all gluten and very little starch. It’s made from wheat flour and give bread the elasticity and rise (learn more). Oat fiber is the made from the shell of the oat that is ground down to a powder. It is an insoluble fiber and used in low carb baking. It absorbs liquid so it can keep baked goods moist. (learn more) Xanthan gum is a food additive that is used in many low carb recipes as a thickener or stabilizer. (learn more)