Chop the onion and garlic finely and cook them in a small pot with a little olive oil, add the sliced chili pepper, olives and capers, and diced fish You can use any kind of fish, in this case I used salmon.
After it has all heated a little, add the diced cherry tomatoes and douse everything in the white wine. Let the wine reduce for 1-2 minutes and then add the fish stock.
When the soup is boiling, add the shrimp and mussels and cook for 2-3 minutes.
Add freshly chopped dill and serve with a few slices of toast.
For this soup, you can use any kind of fish you prefer. You can also add other seafood: octopus, prawns, squid, cuttlefish, or crabs. They all work perfectly, just be careful not to overcook them.