##peel and chop the onion## ##Peel, wash and chop the potatoes## Heat 1 tablespoon of oil in a large pot. Fry the onion in it. First fry potatoes, then tomato paste.
Stir in 1 l water, stock and ##thyme##, bring to the boil. Cover and simmer for 5-10 minutes.
Stir the sauerkraut into the soup and continue cooking for about 10 minutes.
In the meantime cut the sausage into very thin slices. Heat 1 tablespoon of oil in a large frying pan. Fry the sausage in it over high heat for 1-2 minutes on each side until crispy. Take out.
Season soup with salt and pepper. Serve with the sausage chips.