Throughout the Mediterranean, whole baked fish feature on every seaside restaurant menu. Typically these will be grey mullet, sea bream or sea bass. The following treatment - where the fish is cooked in the oven on a bed of potatoes surrounded with roast tomatoes - can be used for any of them. It is also a good way to cook a large piece of cod fillet, in which case it goes in skin side up.
Your fishmonger should gut and descale the fish and cut out the gills for you. If for some rea