Chop the leek stalk, garlic cloves and chili peppers (or grated ginger root) and sauté in a large saucepan with the olive oil. Add the chopped parsnips, potatoes and fennel and cover with water. Boil. Add white wine, vegetable stock and tomatoes and simmer for 35-40 minutes at a lower temperature.
In the meantime, cut the salmon into pieces approx. 2 - 3 cm in size. Add the salmon to the soup 5 minutes before the end of cooking. Stir in the cream and lemon juice and season with the spices and soy sauce.