The secret to achieving an airy crust in your fish batter, with just the right amount of crunch, is to make the batter using a bubbly carbonated drink.

Whether you're hosting a casual lunch or craving a classic fish fry ... Make the Cod Batter: In a separate bowl, whisk together the flour, cornmeal (if using), baking powder, garlic powder ...

In a medium bowl, whisk together cornmeal, salt, pepper, sugar, garlic powder and baking powder. Pour in melted shortening and boiling water, and stir until batter is homogenous. It should be loose.