Peel and chop the onion. Heat the oil in a pot and fry the onion in it. Add the minced meat and fry. Add tomato paste and flour, sweat briefly and deglaze with broth.
Add the tomatoes and mash with a wooden spoon. Add laurel, cinnamon, star anise and chilli and simmer for about 15 minutes. Meanwhile clean and wash the leek and cut it diagonally into approx. 5 mm thick rings.
Wash and clean the zucchini and cut into medium-sized cubes. Add leek and zucchini to the simmering soup and cook for about 5 minutes. Season with salt, pepper and vinegar. Arrange the soup in a soup tureen.
It goes well with baguette bread.