Onions peel and chop finely. Clean, wash and cut the leek into rings. Put beans on a sieve, rinse and drain. Slice the sausages
Drain the sauerkraut well or squeeze out if necessary. Then cut smaller with a knife
Heat the oil in a pot. Fry the onions and sauerkraut briefly. Add the leek and stew everything else for another 5-6 minutes. Season with paprika and possibly caraway seeds
Pour in the stock, bring to the boil, cover and cook for 20-25 minutes. Add beans and sausages and heat up in the soup for about 5 minutes. Season to taste with salt, pepper and possibly caraway