This is one of the most acclaimed restaurants in Rome. Its 16th-century building is a classic setting in pristine white with accents of wood. The Troiano brothers turn out an inspired cuisine based on the best and freshest ingredients at the market. Start with caramelized tuna fish with chestnut honey, ginger, green pepper, rosemary, and green apple purée. Other tantalizing menu items include spaghetti with a ragout of sole, artichokes, and tuna roe; breast of guinea fowl in a mustard crust; and salt cod confit with tomatoes, spring onions, olives, Jerusalem artichokes, and eggplant.