Peel the potatoes, carrots and celery, cut into small pieces, cover with water and place in a large saucepan.
Bring the lard, bay leaves, marjoram, pepper, allspice powder and the cut stems of the parsley with salt to a boil. Simmer for a maximum of 15 minutes on a low level, add the mustard and then let it stand. Take out the bay leaves and persilia stalks.
Finally, mash everything together to the desired consistency and lumpiness and, if necessary, dilute with water.
Season everything again and, if necessary and to taste, add more seasoning. The vegetable seasoning - consists mostly of salt and about 15% vegetables and unfortunately also
Flavor enhancers - can help here and also perform small taste miracles.
Before serving, stir in a dash of cream or condensed milk and decorate with the finely chopped parsley.
The potato soup can also be refined with mixed mushrooms.