This 15-gram bag of dehydrated sourdough starter yeast from Heritage Sour is a fresh and active product made in the United States. It is a type of yeast and baking agent that can be used for making sourdough bread and other baked goods. The product is free from artificial flavoring, preservatives, dyes, GMOs, low in sugar and fat, and contains no MSG or artificial coloring. It is also organic, low-fat, sugar-free, and homemade. The bag contains 1 serving size of 15 grams and comes with step-by-step instructions for activation.