This is as simple and tasty as it gets!
All you need is boiled salt cod or pollock and freshly boiled, or left over potatoes.
You need at least the same amount of fish to potato, I'd go for more fish.
Soak the fish for 24 hours, changing the water twice. Boil for 20 minutes. If using whole fish, remove all the bones.
Break the fish and potatoes in to a bowl, grind in black pepper, mix and form fishcakes.
Fry on both sides on a medium heat until golden brown in as much butter as you dare!