Porterhouse with Garlic-Soy Sauce Marinade

"With a T-shaped bone that divides a cut of dense strip loin from a chunk of buttery tenderloin, the porterhouse is the iconic steak of American grilling. It’s such a perfect steak that you don’t want to do too much to it. Here we simply marinate it with the garlic–soy sauce marinade to give it a bit more oomph, but that’s it. Also use this method to grill a T-bone steak, which is a smaller version of the porterhouse, or a beefy, marbled strip steak (also called shell or short loin). Adjust the grilling times to the size of the cut...."