3 1/2   lb           Salmon
   1                    Lemon
                        Salt and Pepper
   1       tb           Oil or Softened Butter
  Lay a piece of silver foil, large enough to wrap the
  salmon in a very loose parcel, on a baking tray. If
  the salmon is to be served hot, grease the foil with
  the butter, or use the oil if serving the salmon cold.
  Thinly slice the lemon and put about half on the foil.
  Put the salmon on top, with a few slices of lemon
  inside and lay the rest of the lemon along the top of
  the salmon. Season generously and wrap loosely, making
  sure the edges are securely folded together so that no
  steam can escape. Put into a medium oven, Gas Mk
  4,350F,180C, for 10 minutes per pound. If serving hot,
  take it out of the oven and let it stand for a further
  10 minutes. If serving cold, leave the salmon in the
  foil for two to three hours. To serve: Unwrap the fish
  and gently pull off the skin.