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onion rings spilling out of a basket onto a wooden counter.

Sourdough Discard Onion Rings

erynwhalen
Golden, crisp, and full of flavor—these sourdough discard onion rings are a cozy, homemade twist on a restaurant favorite.
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Prep Time 5 minutes
Cook Time 15 minutes
Course Appetizer
Cuisine American
Servings 7 people

Ingredients
  

  • 1 –2 large yellow onions sliced into ¼-inch rings
  • 1 cup sourdough discard
  • 1 cup sparkling water
  • 2 1/2 teaspoons baking powder
  • 1 cup all-purpose flour
  • 2 teaspoons salt
  • 10 –11 cups high-heat frying oil preferably coconut oil, tallow, or lard.

Instructions
 

  • Peel and slice large onions into rings. Separate and set aside.
  • In a large bowl, whisk together sourdough starter discard, sparkling water, baking powder, flour, and salt until smooth.
  • Heat hot oil in a Dutch oven or deep fryer to 350–375°F.
  • Dip onion rings into the flour mixture, shake off excess, and fry in small batches until golden brown, about 2–3 minutes per side.
  • Remove with a slotted spoon and let drain on a paper towel-lined plate or wire rack.
  • Serve warm with honey mustard or ranch dressing.