Melt pork lard on low heat. Cut smoked bacon into cubes and fry a bit. Chop peeled onion and fry gently until it becomes translucent. Finely chop leek, carrot and celery root. Fry gently vegetables without colouring. Add water, peas and finish to boiling. Add vegetable broth and dried marjoram,reduce the heat. After 20 minutes add diced potatoes and cook it for about 40 minutes, periodically stirring. Add white pepper and salt to taste. Sprinkle with parsley before serving.