#1 Slice potatoes and put in medium bowl, cover with cold water #2 Mix flour, baking powder, salt, and pepper together in a separate bowl. Add milk and egg and stir batter until it is a smooth consistency. Let batter stand for roughly 20 minutes #3 Meanwhile, heat oil in a large pot or electric skillet to 350 degrees F (175 degrees C) #4 Take the potatoes out of the water and pat dry. Fry them in the hot oil until tender, roughly 5 minutes. Take out and drain on paper towels #5 Dredge the fish in batter, and place in the hot oil. Fry fish in batches until golden brown on all sides. Take out and drain on paper towels #6 Fry potatoes again in hot oil until crisp, 1 to 2 minutes, then take out and drain on paper towels.