Nobu made the dish famous; here we make it easy.
Yield: 4 servings
In a blender, puree ginger, miso, and mirin. Season with white pepper. Put marinade with the fish in a Ziploc bag and let sit for 4 hours.
Preheat oven to broil. Remove fish from bag, removing excess marinade. Reserve marinade. Broil fish 5–7 minutes. Meanwhile, pour the marinade into a saucepan, bring to a boil, and simmer for 10 minutes and serve on top of fish.