Xanthan Gum is produced by the pure culture fermentation of the microorganism Xanthomonas Campestris to yield a type of gel fiber similar to guar gum. It is commonly used in thickening food products. As the label on the Xanthan Gum powder suggests this product is used as a baking aid for recipes that use gluten free flours. Gluten is needed to impart elasticity to the dough which would allow it hold in the gases formed by fermentation which causes the rising effect. Xanthan Gum acts as a substitute for the missing gluten in gluten free recipes.