Premium Baking Soda from Bob's Red Mill is an all-natural and versatile addition to your kitchen and beyond! Made from deposit's of mineralized sodium bicarbonate, it is extracted without the use of chemicals. A common ingredient in many recipes, it's also a great household cleaner and deodorizer. Bob's Red Mill products labeled gluten Free are milled and blended in the dedicated gluten Free mill room, packaged in the dedicated gluten Free packaging room, batch tested in the dedicated gluten Free quality control laboratory, and then confirmed by ELISA gluten Assay tests. Kosher.