Peel and wash the potatoes. Cook in salted water for about 25 minutes. Clean and quarter the savoy cabbage and cut out the stalk. Wash the cabbage and cut into coarse strips
Steam the savoy cabbage covered in a little salt water for about 10 minutes
Wash the salmon, dab dry. Fry in 1 tablespoon of hot fat on each side for 3-4 minutes until golden brown. Season with salt, pepper and some lemon juice
Heat 1 tablespoon of fat. Sauté the flour in it until golden yellow. Stir in fish stock, bring to the boil and simmer for about 5 minutes. Season to taste with salt, pepper, mustard, wine and the rest of the lemon juice. Arrange everything and garnish with lemon slices
Drink: cool white wine