Peel and finely chop the onion. Heat the fat in a pot and fry the onion cubes in it. Add rice and saffron and fill up with chicken soup. Cover and let it swell for about 20 minutes at low heat. Clean and wash the mussels and cook them in boiling salted water until they have opened. Drain.
Wash the fish, sprinkle with lemon juice and cut into cubes. Wash the scampi and pat them dry. Heat oil in a pan and fry both in it. Add everything to the risotto and season with salt and pepper. Wash the dill and chop finely. Arrange on plates, sprinkle with dill and serve garnished with lemon and dill