From Wardeh Harmon in Oregon. She discusses the science and the benefits of sourdough:
-No need to buy your yeast – the wild yeasts and lactobacilli in sourdough starter are everywhere in the environment, you just need to encourage them.
-Sourdough breads don’t stale as quickly.
-Sourdough starter is more versatile and resilient than store-bought yeast (for example, sourdough starter can tolerate a wider range of temperature and ph than storebought yeast).