Rumford Reduced Sodium Baking Powder is a balanced, double-acting baking powder and is NON-GMO project verified. Containing zero trans fat it has be the first choice of bakers for many years. This 4 oz. can features a pop top and leveling edge for accurate measuring. Known for its dependable results, Rumford's double acting formula releases carbon dioxide when exposed to moisture and heat. See the container for the best buy date (or six months after opening).