Peel and finely chop the onion. Clean, wash and cut the soup greens into bite-sized pieces. Heat the fat. Sauté onion and vegetables. Deglaze with broth, bring to the boil and cook for about 20 minutes.
Rinse and drain the beans. Add noodles after about 10 minutes of cooking time, beans after about 15 minutes to the soup and cook along. Season to taste with salt, pepper and vinegar. Wash the thyme, remove the leaves from the stems, chop them and sprinkle them over the soup.