Ingriedients:  

2 onions
700g potatoes
100 g celeriac
200g carrots
100g parsley
400g leeks
1EL oil
100g bacon
750ml clear soup
500ml milk
salt
pepper
1 egg
150g sour cream
1 bunch of parsley

Preparation:

First you have to peel onions, potatoes, celaric, and carrots and cut them to little cubes. Cut the leeks to strings. Warm the oil in a saucepan and roast the onions in it. Add the other vegetables and braise it lightly. Add the cleaned soup and cook it 10 minutes. Then you have to add milk. After that you have to mash it. Add salt and pepper. Then mix the egg and the sour cream and add it too. Now you have to add the bacon. Then put some parsley at it.