Unbleached White All Purpose Flour = 10-12% Protein

Bob's Red Mill packages baking soda mined from the earth. This baking soda is minimally processed and a product of nature with nothing added and nothing taken out. There may be naturally occurring traces of aluminum in this baking soda. While the amount of aluminum in baking soda (if any) is minimal, they feel omitting the term "aluminum free" from packaging will avoid any confusion with customers.