When I asked chef Jacques Pépin about his favorite childhood dishes, he fondly brought up this soup. He mentioned that it was simple, versatile, comforting, and satisfying — all qualities I agree that this delicious soup has. Jacques says, “Leeks and potatoes are commonly made into creamy vichyssoise. For Parisian potage, the leeks and potatoes are cut into very small pieces, stewed in a little butter for a couple of minutes, and then cooked with chicken stock.