Whole Salmon or Sea Trout Cooked in Foil

• 1 salmon or sea trout, 3.4–4 kg approx.
• 110 g butter

Preheat the oven to 180°C/350°F/Gas 4.

Clean and gut the fish if necessary, dry carefully. Put a sheet of tinfoil on a large baking sheet, preferably with edges. Place the salmon in the centre of the sheet of tinfoil. Smear butter on both sides and put a few lumps in the centre