Cold salmon mayonnaise

• 3lb (1.4 kg) middle cut of salmon
• salt
• 1 tablespoon

Determine the amount of water required for cooking the fish by placing fish in a large pan and pouring over cold water to completely cover, then remove the fish. Salt the water and add the vinegar. Bring to the boil, then carefully lower in the salmon and return to a full rolling boil and boil for exactly 2 minutes.

Draw off the heat and cover with a tight-fitting lid. Set in a cool pla