Cooking Instructions:

1. Preheat 8 cups of vegetable oil to 350°F in a fryer or a heavy pot.
2. Mix flour, cornstarch, sugar, salt, baking powder, baking soda, onion salt, paprika, and black pepper in a bowl.
3. Gradually add club soda to the dry mixture, stirring continuously until the batter foams.
4. Dip the fish slices into the batter, ensuring an even coat.
5. Carefully lower the coated fish into the hot oil. Fry for 2-3 minutes until the batter turns golden and the fish floats.
6. Remove and drain the fish on a wire rack.

Expert Cooking Tips:

• To prevent the batter from sticking, hold the fish briefly in the oil to form a crust before releasing.
• For an extra flavor twist, replace club soda with beer.
• Leftover batter? Make some crispy onion rings!