1. Preheat your oven to 350°F (175°C). Grease a large baking dish with unsalted butter and set it aside.

2. In a medium bowl, combine chopped fresh dill, salt, and pepper.

3. Place the salmon fillet on a cutting board and sprinkle both sides with the dill mixture, making sure to coat it evenly.

4. In a large skillet, sauté the chopped chives and shrimp in unsalted butter over medium heat until the shrimp are pink and cooked through.

5. In a separate bowl, whisk together 2 tablespoons (30g) of all-purpose flour, 1/4 cup (60ml) of white wine, and 1 cup (240ml) of heavy cream. Add 2 tablespoons (30g) of freshly squeezed lemon juice and whisk until the mixture is smooth.

6. In the baking dish, create a layer of cooked shrimp. Top with a layer of the cream sauce, followed by a layer of salmon fillet. Repeat the layers until all ingredients are used, finishing with a layer of cream sauce on top.

7. Sprinkle 2.8oz (80g) of red caviar and 1/2 cup (60g) of grated aged cheddar cheese over the top layer of cream sauce.

8. Bake in the preheated oven for 30-40 minutes or until the top is golden brown and the salmon is cooked through.

9. Serve hot and enjoy!