Pour the vegetable oil into a deep pan or deep fryer, and heat to 300 degrees. When it is up to heat blanch the cut potatoes in the oil until soft, but not colored, about 4 minutes. Remove potatoes and drain on paper towels.
Mix together the flour and the beer until smooth, then fold in the egg whites. Turn up the heat of the oil to 350 degrees. Dip the fish in the batter to coat, shaking off extra batter, and fry for a few minutes with the chips until golden brown. Between 4 and 8 minutes more. If you oil is deep enough you can put the fries on top of the fish to keep it from floating so it gets done evenly.
Drain on paper towel and serve with Tarter Sauce, sliced lemon, or malt vinegar.
Servings 0