Miso-marinated sablefish is a dish that features sablefish, also known as black cod, which is known for its rich, buttery flavor and flaky texture. The fish is marinated in a mixture of miso, a fermented soybean paste, along with ingredients like sugar, sake, and mirin. This marinade not only enhances the fish's natural taste but also helps to tenderize it. After marinating, the sablefish is typically grilled or broiled, resulting in a caramelized exterior while remaining moist inside. This cooking method allows the umami flavors of the miso to penetrate the fish, creating a deliciously savory dish that is popular in Japanese cuisine.