Peel and finely chop the onion. Clean, wash and peel the greens. Then cut into bite-sized pieces. Heat the fat. Sauté onion and vegetables. Deglaze with broth, bring to the boil briefly and cook for about 20 minutes.
Rinse the beans. Add noodles for the last 10 minutes, beans for the last 5 minutes to the soup. Season to taste with salt, pepper and vinegar. Wash and chop the thyme and sprinkle over it.