Flaky and airy, these potatoes are a classic French recipe.
Peel the potatoes and then trim into oblong shapes with flat sides and bottoms. Either by hand or with a mandoline, slice the potatoes just a bit thicker than 1⁄8-inch. Fry the slices once in a pan with at least 1 ½ inches of vegetable oil heated to 300 degrees. Fry for a second time in hotter oil — 375 degrees — until they puff into golden, perfect pommes soufflés. Salt to taste and serve immediately.