Fish Aspic

Instructions

1. Prepare the fish stock
   In a large pot, combine fish fillets, onion, carrot, bay leaf, peppercorns, and salt. Add enough water to cover by 1 inch (about 4 cups). Bring to a gentle simmer and cook for 15-20 minutes until fish is cooked through. If using, add white wine for additional flavor.
2. Strain the stock
   Carefully remove the cooked fish and set aside to cool. Strain the stock through a fine-mesh sieve into a clean bowl, discarding the vegetables and spices. Reserve 3 cups of the clear stock.
3. Prepare the gelatin
   In a small bowl, sprinkle the gelatin over the cold water and let stand for 5 minutes to bloom. Heat ½ cup of the fish stock until hot but not boiling, then stir in the bloomed gelatin until completely dissolved. Add this mixture back to the remaining fish stock and stir well.
4. Assemble the aspic base
   Pour a thin layer of the gelatin mixture into a 9x5-inch loaf pan or decorative mold. Refrigerate for about 30 minutes until slightly set but still sticky. Meanwhile, flake the cooled fish into bite-sized pieces, removing any bones or skin.
5. Create the decorative layer
   Arrange slices of hard-boiled egg, cucumber, and some of the herbs in an attractive pattern on the semi-set gelatin layer. Gently spoon a small amount of gelatin mixture over these decorations to secure them in place. Return to refrigerator for 15 minutes to set.
6. Add the fish layer
   Once the decorative layer is set, arrange half of the flaked fish over it, sprinkle with some of the fresh herbs, and carefully pour more gelatin mixture to cover. Return to refrigerator for 20 minutes to partially set.
7. Complete the aspic
   Add remaining fish and herbs, then pour the rest of the gelatin mixture to fill the mold. Ensure all ingredients are covered with the gelatin mixture. Cover with plastic wrap and refrigerate for at least 3 hours, preferably overnight, until completely set.
8. Serve the aspic
   To unmold, dip the bottom of the mold briefly in warm water, then invert onto a serving platter. Garnish with lemon slices and additional fresh herbs. Slice and serve cold with a squeeze of lemon juice or horseradish sauce on the side.