Sandwich bars might be threatening the traditional two-hour lunch, but that doesn't stop this old-fashioned neighborhood bistro from flourishing -- even though it's open at lunch only except Wednesday. Businessmen loosen their neckties to feast on homemade pâté, plate-engulfing steak for two, or guinea hen with cabbage, with one of the more than 30 small producers' wines listed on the chalkboard. There is no decor to speak of, but Le Petit Verdot is about substance not style. Métro: Charles-de-Gaulle-Étoile.