2-1/2 cups all-purpose flour
1/2 cup cornstarch
1/4 cup sugar
3 tablespoons baking powder
1 tablespoon ground red pepper
2 teaspoons salt
2 cups club soda
Vegetable oil for frying
2 large sweet yellow onions, cut into 3/8-inch-thick slices and separated into rings
In a large bowl, combine flour, cornstarch, sugar, baking powder, ground red pepper, and salt. Whisk club soda into mixture.
In a large soup pot, heat 2 inches of oil over medium heat until hot but not smoking. Dip each onion ring into the batter, allowing the excess to drip back into the bowl. Fry a few onion rings at a time for 5 to 6 minutes, or until golden, turning once during cooking. Drain on a paper towel-lined platter before serving.
