I came across this beast at the fishmongers, absolutely divine.
– make some diagonal incisions in the fish.
– Rub some salt, pepper and herbs (thyme is good, oregano or rosemary too) into the flesh
– Place the fish, dar side up, in a roasting pan
– Drizzle with olive oil and a little white wine
– Place some lemon slices on top
– Bake in a hot oven for 25 minutes or more for a big fish