How to roast a fish in salt

There are all sorts of elegant ways to prepare fish -- baked, for example, with tomatoes, or boiled, with mayonnaise and boiled vegetables per Artusi's serving suggestion. However, if the fish is absolutely top quality and very fresh, one of the nicest ways to cook it is in salt: the salt seals it, keeping the juices from escaping as it cooks, while the skin keeps the salt from penetrating the fish. The result is extraordinarily tasty and tender.