Slow-Roasted Tomatoes with Rosewater

Here is an unusual salad from the famed Hotel Mamounia in Marrakech—unusual because it is not made this way anywhere else. The hotel manager, Robert Bergé, kindly gave me the recipe and told me it was a brilliant variation by a French chef inspired by Moroccan salads and vegetable accompaniments. “And who was this brilliant chef?” I asked. He turned out to be the very famous Daniel Boulud.