The Magic of Sourdough Discard When it comes to sourdough baking, sourdough discard is a hidden gem that should not be overlooked. But what exactly is sourdough discard and why should you use it in your baking adventures? What is Sourdough Discard? Sourdough discard refers to a portion of sourdough starter that is removed and discarded during the feeding process. When maintaining a sourdough starter, it needs to be regularly fed with fresh flour and water to keep it active and healthy....