The porterhouse is a steak lover’s steak, a slab of beef that includes both a top strip loin and a tenderloin. All self-respecting grill masters should have a good porterhouse recipe in their repertoires, and the best one I know of is the way it’s prepared in Florence, Italy. Tuscan grill masters start with a thick slab of dark, rich Chianina beef, grill it over a superhot bed of blazing oak embers, and douse it with the most fragrant olive oil money can buy.