In a small saucepan, combine the white miso paste, sake, mirin, sugar, soy sauce, sesame oil, grated ginger, and minced garlic.
Heat the mixture over low heat, stirring constantly, until the sugar has dissolved and the ingredients are well combined. This should take about 5 minutes. Remove from heat and let it cool to room temperature.
Marinate the Sablefish:
Place the sablefish fillets in a shallow dish or a resealable plastic bag.
Pour the cooled miso marinade over the fish, making sure to coat each fillet evenly.
Seal the dish or bag and refrigerate it for at least 2 hours, or ideally overnight. Marinating overnight will allow the flavors to penetrate the fish more deeply.
Preheat the Oven:
Preheat your oven to 400°F (200°C).
Cook the Sablefish:
Remove the marinated sablefish from the refrigerator and let it come to room temperature for about 15-20 minutes.
Place the fillets on a baking sheet lined with parchment paper or lightly greased.
Bake in the preheated oven for about 15-20 minutes, or until the fish is opaque and flakes easily with a fork. The cooking time may vary depending on the thickness of the fillets.
Broil for a Glaze:
If desired, you can switch your oven to the broil setting for the last 2-3 minutes of cooking to caramelize the top and give it a beautiful glaze. Be sure to keep a close eye on it to prevent burning.
Garnish and Serve:
Once the sablefish is done cooking, remove it from the oven.
Garnish with toasted sesame seeds and sliced green onions, if desired.
Serve the miso glazed sablefish hot with your choice of side dishes, such as steamed rice and sautéed vegetables.
This miso glazed sablefish recipe offers a perfect balance of sweet and savory flavors and is sure to impress your guests or satisfy your own culinary cravings. Enjoy!