Peel and chop the onions. Peel, wash and chop the potatoes. Leek clean, wash, cut into rings. Wash and pluck the marjoram.
Heat the oil in a pot. Fry the onions in it until transparent. Rinse brown lentils and add 2/3 marjoram to the onions. Pour on 1 1/4 l water. Bring everything to the boil and simmer for 25 minutes
Cut the sausage into slices. Wash the apricots, cut in half. Add both after 25 minutes with leek and potatoes to the stew. Cook for another 20 minutes
Rinse red lenses. Add the lentils and broth to the stew after about 10 minutes. Season stew with salt, pepper, sugar and vinegar. Sprinkle with rest of marjoram