Soak the lentils for one night. One day later, drain them in a sieve. Boil the water with the grained clear soup and simmer the lentils in it for 35 to 40 minutes on low heat. Add salt and pepper.
Peel and finely dice the onions. Rinse and peel the carrots and celery and also cut into cubes. Clean and rinse the leek and cut into fine rings. Melt the butter in a frying pan and sauté the celery, carrots, onions and leek in it. Then mash them. Add the sour cream and the whole thing to the lentils form.
Simmer for 10 minutes. Season with salt, pepper and Worcester sauce. Rinse the chives and parsley, toss dry, chop finely and stir in.
Our tip: Always use fresh chives if possible!