The secrets to success with french fries are drying the potatoes well before frying, keeping the oil at a constant temperature and not crowding the pan or covering it. If you plan to make these without an electric deep fryer, be sure you have a large, heavy-bottomed pan, a flat wire skimmer and a deep-fat frying thermometer. For country-style french fries, scrub the potatoes well but leave their skins on.