Preheat oven to 475 degrees. Wipe fillets with lemon juice and pat dry. Combine milk, hot pepper sauce, and garlic. Combine pepper, salt, and onion powder with cornflake crumbs and place on a plate. Let fillets sit briefly in milk. Remove and coat fillets on both sides with seasoned crumbs. Let stand briefly until coating sticks to each side of fish. Arrange on lightly oiled shallow baking dish. Bake for 20 minutes on middle rack without turning. Cut into 6 pieces. Serve with fresh lemon. Makes 6 servings.