Cook potatoes with skin for about 20 minutes. Drain, rinse with cold water, peel and let cool down a little.
In the meantime, rinse the salmon fillet, dab dry and cut into small cubes of about 2 cm. Cut smoked salmon into strips. Peel onions and cut into rings. Heat 1 tbsp. butter, fry onions in it.
Wash the dill, shake dry and chop coarsely. Whisk cream, milk and eggs well. Season with salt and pepper.
Preheat oven (electric cooker: 200 °C/circulating air: 175 °C/gas: see manufacturer). Cut potatoes into slices. Mix carefully with salmon, onions and dill. Season with salt and pepper. Pour into a greased casserole dish, pour egg milk over it.
Sprinkle with pink berries and bake in a hot oven for about 40 minutes.