I feed my sourdough starter every day or every other day....... and after a few days, if I don't bake with it, the jar gets too full. Normally, you would dump some of the starter before feeding again, but that seems like such a waste! So, I found this recipe here for gingerbread made with sourdough starter. It uses an entire cup of starter so I didn't have throw away any as my jar got full. Try some, it's quite yummy!