Washing fish. Wash lemon and cut into slices. Boil up approx. 2 l water with lemon slices, bay leaf, peppercorns and approx. 1 tbsp. salt
Peel and wash the potatoes. Cook in salted water for about 20 minutes. Clean and wash the leek. Peel carrots. Cut or slice both into very fine strips
Let the fish simmer in the hot stock at low heat for about 25 minutes. Steam vegetables in hot fat for about 5 minutes, season. Whip cream until semi-stiff. Fold in horseradish. Wash and chop the parsley
Drain the potatoes and sprinkle with parsley. Arrange vegetables and potatoes. Remove fish from the stock, drain and arrange on the vegetables. Add the horseradish cream. Garnish with remaining parsley