Sourdough discard crackers are thin, crispy and have that amazing tang that you can only get with real sourdough! You can flavor with your favorite herb, parmesan cheese and more.This homemade sourdough cracker recipe has been tested with King Arthur flour but you can use your flour of preference. You'll never want to throw away your leftover sourdough discard after your taste these addictive crunchy crackers. They are incredibly easy to make!