INGREDIENTS
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1 large sweet onion
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2 cups buttermilk
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1/4 cup cornmeal
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1 teaspoon baking powder
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1/2 teaspoon smoked paprika
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1 1/2 (or more) cups all-purpose flour, divided
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1 1/2 teaspoons kosher salt, plus more
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1 cup chilled club soda
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3/4 cup (or more) chilled lager
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Vegetable oil (for frying; about 8 cups)
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Buttermilk Ranch Dressing (for serving)
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A deep-fry thermometer