Boil the potatoes for about 20 minutes, peel and slice
Clean, wash and chop the tomatoes and onions. Fry the onions in hot oil
Deglaze with 150 ml water. Stir in stock. Season with vinegar, salt, pepper and 2 tbsp. horseradish. Pour over potatoes and tomatoes, let stand
Washing fish. Cut into 8 pieces. Leave to soak in boiling salt water for about 8 minutes. Lift out, remove skin and bones. Dust fish with flour. Heat the fat. Fry the fish for about 2 minutes on each side.
Whip the cream until stiff. Fold in 1 tbsp. horseradish. Serve everything. Garnish with corn salad if necessary.
Drink: cool white wine