Wash fish sections. Weigh 150 g soup vegetables and set aside. Clean, wash and cut the remaining soup vegetables into pieces. Bring fish pieces, soup vegetables, wine, 3/4 litre water and spices to the boil in a pot.
Let the brew boil open at medium heat for about 30 minutes. Skim the foam from time to time. At the end of the cooking time, pour the stock through a fine sieve and continue cooking for about 15 minutes until it is reduced by a third.
In the meantime, clean and wash the rest of the vegetables and cut them into fine sticks. Add to the fish stock 5 minutes before the end of the cooking time. Wash the prawns briefly, dab dry. Before serving, heat the prawns briefly in the soup.