01 - 
                Heat about 8 cups of vegetable oil to 350°F in a deep fryer or heavy pot.
              
              
              
                02 - 
                In a mixing bowl, combine the flour, cornstarch, sugar, salt, baking powder, baking soda, onion salt, paprika, and ground black pepper. Stir to combine.
              
              
              
                03 - 
                Add the club soda to the dry ingredients and stir as the batter foams.
              
              
              
                04 - 
                Coat the fish pieces with the batter before frying.
              
              
              
                05 - 
                Drop the battered fish into the hot oil and fry for 2 to 3 minutes until the batter is golden and the fish pieces float to the top.
              
              
              
                06 - 
                Drain the cooked fish on a wire rack.