This product is a dehydrated sourdough starter from Heritage Sour, with an age of over 175 years. It comes in a 15-gram bag and is suitable for making homemade sourdough bread. The starter is organic, GMO-free, and free from artificial flavoring, preservatives, and MSG. It is dairy-free, egg-free, and does not contain any artificial coloring. This San Francisco-style sourdough starter is perfect for those looking to add a traditional and authentic touch to their baking.