The most important thing in this soup is a strong fish broth. We strongly recommend cooking at home, but by no means a broth cube. Here is my version of the broth: bones, tails, heads and skins of fish, which this time remain after profiling, and even shrimp, celery, a few slices of leek, carrots, a few stalks of dill or fennel and parsley, black pepper grains and a glass of dry white wine. The fish broth was cooked for a maximum of about an hour, so you need to tinker with it. And the finished broth can be frozen, so it will always be at hand.