Beer Battered Onion Rings

Ingredients

• 1 large sweet Vidalia onion (cut into 1/2-inch thick rings)
• 2 cups buttermilk
• 1/4 cup cornmeal
• 1 teaspoon baking powder
• 1/2 teaspoon smoked paprika
• 1/2 teaspoon garlic powder
• 1 1/2 cups all-purpose flour (divided)
• 1 1/2 teaspoons kosher salt (plus more for seasoning)
• 1 cup chilled club soda
• 3/4 cup beer (not lite)
• vegetable oil (for frying)
• 1 cup sour cream
• 3/4 cup mayonnaise
• 3 tablespoons sun-dried tomatoes
• 1/4 cup roasted red bell peppers
• 1 tablespoon lime juice
• 1/2 teaspoon fresh cracked pepper
• 1 teaspoon salt
• 3 tablespoons white wine
• 1 tablespoon minced garlic