Step 1

In a large mixing bowl, combine all-purpose flour, cornstarch, baking powder, salt, paprika, garlic powder, and onion powder. Whisk the dry ingredients together to ensure an even distribution of flavors.

Step 2

Mix the Wet Ingredients: In a separate bowl, beat the egg and gradually add the club soda while whisking to create a frothy mixture.

Step 3

Slowly pour the wet ingredients into the bowl of dry ingredients. Stir until you achieve a smooth, lump-free batter. Let it rest for 5-10 minutes to ensure the coating adheres well to the fish.

Step 4

Pat the fish fillets dry with paper towels. Lightly season with a pinch of salt to enhance the flavor.

Step 5

Dip each fillet into the batter, ensuring it's evenly coated on all sides. Allow any excess batter to drip off.

Step 6

Heat vegetable oil in a deep fryer or large skillet to 375°F (190°C). Gently place the coated fish into the hot oil and fry for 3-5 minutes per side, or until golden brown and crispy.

Step 7

Remove the fish from the oil using a slotted spoon and place it on a paper towel-lined plate to drain excess oil. Serve hot with your favorite sides, such as fries, coleslaw, or tartar sauce.