Soak rolls in cold water. Peel onions, finely dice 1 onion. Cut remaining onions into rings. Wash potatoes thoroughly, peel, cut in half and cook in boiling salted water for about 20 minutes. In the meantime, knead the minced meat, chopped onions, squeezed bread roll, mustard, egg, salt, pepper and paprika with the dough hooks of the hand mixer. Clean and wash the salad, pluck into bite-sized pieces and drain.
For the salad dressing mix condensed milk and lemon juice. Season to taste with salt, pepper and sugar. Cut the gherkins into cubes. Heat 40 g butter in a saucepan, fry onion rings in it, dust with flour, sweat on and stir-fry until dark brown. While stirring constantly, gradually add stock, 100 ml milk and cream. Season to taste with salt, pepper and sugar. Simmer sauce at low heat for about 5 minutes and keep warm. Form 12 small meatballs from the minced dough. Heat the oil in a pan and fry the meatballs in it in two portions on each side at medium heat for about 4 minutes. In the meantime wash parsley, dab dry and chop finely. Heat the remaining milk and butter. Drain the potatoes, mash with a potato masher, add hot milk, mash again and season with salt and nutmeg.
Form 12 small meatballs from the minced dough. Heat the oil in a pan and fry the meatballs in it in two portions on each side at medium heat for about 4 minutes. In the meantime wash parsley, dab dry and chop finely. Heat the remaining milk and butter. Drain the potatoes, mash with a potato masher, add hot milk, mash again and season with salt and nutmeg. Put the salad in a bowl and pour the salad dressing over it. Arrange mashed potatoes, meatballs and sauce sprinkled with parsley on a plate. Serve garnished with parsley as desired