Wash the salad, dab dry and pluck into bite-sized pieces. Clean, wash and slice the radishes. Mix yoghurt, lemon juice and cream. Season to taste with salt, pepper and sugar. Wash the chervil, dab dry and chop finely. Cut cress from the bed and stir into the salad dressing with the chervil.
Peel, wash and chop the potatoes. Cook potatoes in boiling salted water for about 20 minutes. In the meantime peel and wash the fairy tails and cut them into pieces. After 15 minutes add the fairy tails and cook them. Drain and let it steam a little bit. Heat the oil in a pan and fry the sausage for about 5 minutes while turning. Take it out. Heat milk. Add butter and hot milk to the potatoes and Mairübchen and mash. Season to taste with salt, pepper and nutmeg. Cut the sausage into slices. Mix salad and radishes and drizzle with yoghurt sauce.
Take it out. Heat milk. Add butter and hot milk to the potatoes and Mairübchen and mash. Season to taste with salt, pepper and nutmeg. Cut the sausage into slices. Mix salad and radishes and drizzle with yoghurt sauce. Arrange puree, sausage and salad on plates. Serve garnished with cress