Wash the potatoes thoroughly and cook in boiling salted water for about 20 minutes
Wash the fish and cut into wide strips. Sprinkle with lemon juice and salt
Mix yoghurt and vinegar. Season with salt, pepper and sugar. Clean, wash and roughly grate the carrots. Clean, wash and dry the salad. Put a few leaves aside, the rest of the salad into small pieces
Quench the potatoes and remove the skin. Peel and chop the onion. Wash and chop the dill. Heat 20 g fat. Fry potatoes in it, fold in dill. Heat 30 g fat in a pan. Fry the fish for about 2 minutes on each side. Steam onion in 10 g fat until translucent. Add mustard sauce and heat up
Mix salad pieces and carrots. Arrange on salad leaves. Pour yoghurt sauce over them. Serve fish with mustard sauce and potatoes. Garnish with lemon if desired.