Ingredients:

  • 1 cup Saikyo Miso (Sweet White Miso Paste)
  • ¼ cup Sake (Japanese Rice Wine)
  • ¼ cup Mirin (Sweet Rice Wine)
  • 3 Tbsp Granulated Sugar
  • Four 5–6 oz Black Cod Fillets (Sablefish)
  • 1 tsp Neutral Oil (e.g., grapeseed or canola)

Instructions:

  1. Reduce Liquids: In a medium saucepan, combine the sake and mirin. Bring the mixture to a rapid boil over medium-high heat. Reduce the liquid by about one-third (to concentrate the flavor).
  2. Dissolve Sugar: While the liquid is still warm, remove from heat and whisk in the granulated sugar until completely dissolved.
  3. Incorporate Miso: Allow the mixture to cool slightly (it should be warm, not hot). Add the Saikyo Miso paste and whisk until the mixture is entirely smooth and lump-free.
  4. Cool Completely: Allow the marinade to cool completely to room temperature before using. This prevents the marinade from prematurely cooking the fish.
  5. Prepare Fish: Pat the Black Cod fillets thoroughly dry using kitchen paper towels. This is crucial for optimal marinade adherence.
  6. Coat and Store: Place the fillets in a non-reactive dish. Pour the cooled miso marinade over the top, ensuring every piece is completely submerged or well-coated.
  7. Marinate: Cover the dish tightly with cling film or a lid. Refrigerate for a minimum of 24 hours, and up to 48 hours. The longer the better for flavor penetration.
  8. Preheat: Preheat your oven to 400°F (200°C). Set your broiler (grill) element to high heat and place the oven rack about 6–8 inches (15–20 cm) from the heat source.
  9. Prep the Fish: Remove the cod from the marinade. Crucially, gently scrape off the excess marinade back into the container. Do not rinse the fish, but too much marinade will burn immediately.
  10. Prepare Pan: Line a baking sheet with non-stick foil or parchment paper and lightly grease it with neutral oil. Place the cod fillets skin-side down (if applicable).
  11. Initial Bake (Recommended): Bake the fish in the preheated oven for 4–6 minutes. This ensures the fish begins to cook through before the aggressive browning stage.
  12. Broil for Glaze: Move the pan under the hot broiler. Cook for 3–6 minutes, watching constantly. The surface should bubble, darken, and caramelize to a rich mahogany color.
  13. Check Doneness: The fish is ready when the thickest part flakes easily with a fork, and the internal temperature reaches 145°F (63°C).
  14. Serve Immediately: Remove from the oven and serve straight away with steamed rice and lightly sautéed greens.