Since 1896. All natural, premium quality. Bringing the extraordinary home. Rao's Seafood Salad Marinade & Dressing is based upon the simplicity of traditional southern Italian cooking. This recipe has been passed down from generation to generation. Rao's Seafood Salad Marinade & Dressing is the same, critically-acclaimed recipe that is served at Rao's Restaurant. This is an all natural product.