Sablefish, also known as butterfish in the U.S., has a mild flavor to its creamy, white, silky flesh, and is fairly easy to prepare due to its high fat content. You can bake sablefish, roll it up in sushi, fry it, poach it, or grill it without fear of it getting too dry, but like other fatty meats, one of the best ways to prepare this fish is to smoke it.