NSourdough is unique in it's nature. No two sourdoughs are ever the same due to the fact that the "sponge" collects natural yeast strains from it's own locale. We are very proud of our sourdough and it's nutty wheat taste.NSourdough is unique in it's nature. No two sourdoughs are ever the same due to the fact that the "sponge" collects natural yeast strains from it's own locale. We are very proud of our sourdough and it's nutty wheat taste.