This 15g bag of dehydrated sourdough starter is an active and ready-to-use food additive that originated from San Francisco and has been around for over 100 years. It comes with instructions for activation and is free from artificial flavoring, preservatives, dyes, GMOs, low sugar, fat-free, no MSG, no artificial coloring, low fat, sugar-free, and homemade. The product is perfect for those who want to create their own sourdough bread at home and is suitable for American regional cuisine. It is also ideal for those who are looking for a food additive that is organic, low in calories, and has no much calories per 100g/mL. The bag has an expiration date of 01/2030 and contains one serving size of 15g.