Put rice in boiling salted water, add saffron and let it swell for about 20 minutes. Peel and finely chop the onion. Heat the fat in a pot and fry the onion cubes in it until transparent. Add tomatoes with juice and deglaze with the broth. Let everything boil for about 10 minutes. Clean, wash and slice the zucchini and cook the last 5 minutes with the rice.
Puree the tomato soup with the cutting stick of the hand mixer and pass through a sieve. Season to taste with salt, pepper and paprika. Drain the rice and add to the soup. Arrange in plates. Sprinkle prawns on top and garnish with dill flags