What goes alongside a juicy burger better than French fries? Onion rings! This simple sourdough onion rings recipe is the perfect crispy crunchy side dish and they are so easy to make. Ingredients for Simple Sourdough Onion Rings Onion rings require very few ingredients. There are four main components to crispy and delicious onion rings; the batter, the bread crumbs, the onion, the oil. The Batter for Onion Rings The amazing thing about having a sourdough starter is that you have a perfect batter just waiting to be used at any time. And I really love that this recipe does not need the starter to be recently fed or active…