Most Americans fry their catfish. This recipe will quickly disabuse you of that approach. Plan to make enough to save some for Katzen Dawgs or Creamy Catfish Spread.
At least 2½ hours before you plan to barbecue, or preferably the night before, mix the rub ingredients in a small bowl. Cover the catfish lightly and evenly with the rub, reserving 2 tablespoons of the mixture if you plan to baste the fish. Place the fillets in a plastic bag and refrigerate them for 2 hours or overnight.