Peel, wash and dice the potatoes. Cook the potatoes in the broth for about 20 minutes. In the meantime, wash parsley, dab dry and chop finely. Cut ham into strips.
Remove 2 tablespoons of potato cubes from the stock, set aside and mash the remaining potatoes very finely with a potato masher. Add cream, bring to the boil and season with salt, pepper and nutmeg.
Add the remaining diced potatoes, strips of ham to the soup and serve sprinkled with parsley.