Peel, wash and quarter the potatoes. Cook in boiling salted water for 15-20 minutes. In the meantime, wash and quarter apples, remove core. Dice the flesh and sprinkle with some lemon juice. Heat the fat.
Steam the apple pieces for 3-5 minutes. Wash the chives and cut into small rolls. Drain potato water. Bring the milk briefly to the boil. Mash potatoes in it. Carefully fold in apples and chives. Drain mandarins and celery. Mix carefully with mayonnaise. Season to taste with salt and pepper.
Carefully fold in apples and chives. Drain mandarins and celery. Mix carefully with mayonnaise. Season to taste with salt and pepper. Roll in portions in slices of meat cheese and pin them with wooden skewers. Serve the meat cheese rolls and puree garnished with salad leaves