Dice 50 g butter and freeze. Peel and wash the potatoes. Cook in salted water for about 20 minutes.
Chop and roast the nuts. Take them out. Peel and finely chop the shallot and fry in 1 tbsp. hot butter. Add curry and sauté briefly. Add stock and 100 g cream,
Clean and wash the salad. Whisk vinegar, salt, pepper and 1 pinch of sugar. Fold in 2 tablespoons of oil.
Drain the potatoes. Add milk, 50 g cream and 2 tbsp butter and mash finely. Season to taste with salt. Fold in nuts.
Wash the thyme. Wash the fish, dab dry, cut in half. Heat 2 tablespoons of oil. Add thyme. Sauté fish in it on the skin side, turn. Fry for about 3 minutes. Season. Stir cold butter cubes into the sauce.
Season to taste with lemon peel, lemon juice, salt and pepper. Mix vinaigrette and salad.