The Sourdough Starter Dehydrated Active Boudin's Bakery San Francisco - 15 Gram Bag is a food additive specifically designed for baking. This product is made by Heritage Sourdough and is guaranteed to last until 01/2030. It is wheat-based, vegan, and free from artificial flavorings, preservatives, and various allergens such as nuts and GMOs. With less than 50 calories per serving, this dehydrated starter is perfect for those looking to make homemade sourdough bread with a San Francisco style twist. Made in the United States, this product is ideal for those passionate about traditional baking techniques.