The key to the best grilled T-bone steak: Start over low heat, with the tenderloin away from the heat source, then finish it over high.
The challenge with a T-bone steak is that it has two distinct pieces of meat on it, which cook at different rates: the leaner tenderloin and the fattier strip. The key to perfectly grilling a T-bone is to start cooking it with lower heat until it's nearly at the desired final temperature, making sure to position the tenderloin farthest from the heat source, then finish it over high heat for a delicious seared crust. Here's how.