Halibut aren't terribly fun to fish (think: reeling up a 200-pound bath mat through hundreds of feet of icy-cold water), but man, are they delicious! Firm yet flaky, with a heartier texture and flavor than other widely available white fish on the market. Halibut cooks more like a thick steak—well-browned and -crusted on the outside, with a juicy, tender center. And, just like with a steak, cooking sous vide can help you nail that medium-rare center every time. Here's how to do it.