Peel and chop the onion. Heat the oil in a large pot. Fry the onion in it. Wash brown lentils, drain and add. Add 1 1/2 l water, bring to the boil. Stir in broth and thyme. Cover and simmer for about 1 hour
Clean or peel and wash the soup greens. Cut carrots and leek into slices or rings. Dice celery. Peel, wash and quarter potatoes. Add vegetables and potatoes to the lentils after about 45 minutes. Add the red lentils in the last 10 minutes and cook them
Stir the sour cream into the stew. Season to taste with salt, pepper and mustard. Wash and chop the parsley and sprinkle over it
This dish is great for freezing for storage. Only add sour cream after defrosting. The stew will then keep for about 3 months