Peel, wash and halve the potatoes. Cover and cook in salted water for about 20 minutes
Mix yoghurt and milk. Season to taste with salt, pepper, 1 tablespoon lemon juice and a little sugar. Wash the dill and chop finely. Wash cucumber, peel if necessary and slice thinly. Mix with yoghurt and half dill
Bring approx. 100 ml water, some salt and 1 tbsp. lemon juice to the boil. Wash the salmon, cut in half, cover and steam for about 10 minutes
Season cucumber salad to taste. Drain potatoes and sprinkle with remaining dill. Lift out the salmon and arrange everything