The grill isn't just for steak and burgers — it can also instill a smoky sear for fish filets. Tuna steaks are a great option for grilling, with similar firmness and density to a cut of red steak.

To cook the perfect tuna steak, you need to start with the right piece of meat. Unfortunately, that isn't as straightforward as it sounds. If you're not used to doing so, buying fresh tuna can be ...