4 simple ingredients for deep frying, plain flour, half teaspoon baking powder, a little salt and beer for a beer batter, if you don't want to use beer use sprite. The carbonation in the beer or sprite gives a light, crispy batter.Flour and gently season the sole fillet or tilapia. Deep fry in hot, not smoking oil, drain on kitchen paper, and thats it, job done. PS to use sprite, 7up or lemonade was a trick that I was shown that takes the edge off the batter and makes it super crispy and full of flavor.
To pan fry or grill, rub a little slat and pepper into the fish. NOT TOO MUCH. Sprinkle a little flour over the fish, shake off excess and add a little butter to baking tray or pan, depending whether you are grilling or pan frying. Butter or oil should be moderately hot but not smoking. Turn fish in butter and pan fry skin down till crispy and then flip. Cook for 2-3 minutes and then serve with lemon and Charlie's accompaniments as desired.