1. Create a bouquet garni by bunching fresh thyme, Italian parsely, bay leaves and celery, and tie with household string. 2. In a large, heavy-bottomed stockpot, saute the garlic, fennel seeds, bouquet gani, salt and leeks in olive oil over medium heat until the leeks soften. Add the tomato sauce, tomato paste, fresh tomatoes, liqueur, water, fennel and cayenne pepper. Cover and bring to a boil. Lower the heat, and simmer for 45 minutes. 3. Remove the bouquet garni, and stir in thesaffron. Place the pieces of fish on top of the stew and cover the pot to poach the fish for five minutes or until cooked through. Remove the fish from the pot and carefully remove any skin. 4. To serve, spoon the stew into individual bowls, place a piece of fish on top and garnish with a dollor of sour cream, orange zest, orange zest and fennel fronds.