Peel the potatoes if necessary or brush the skin vigorously under water. Boil the potatoes for about 20 minutes. Quench and let cool down
Finely chop the salmon. Cut the potatoes into slices or wedges. Distribute both in ovenproof portion moulds (e.g. mussel shells) or in a large flat casserole dish. Season. Spread butter in flakes on top
Bake in the preheated oven (electric oven: 225 °C/circulating air: 200 °C/gas: level 4) for 5-7 minutes. Garnish