A porterhouse steak is a composite steak that combines the tenderloin and top loin, and is derived from the point where the two meet. It is a large steak that can weigh up to 2 pounds and is often marketed in restaurants as a meal for two. The porterhouse steak is known for its tenderness and meaty flavor, and requires a little finesse to properly cook the two distinct steaks included in it. When buying a porterhouse steak, look for one cut at least 1.5 inches thick. A porterhouse can be served whole or sliced, depending on how you want to divide it up. It is often referred to as "the king of steaks" and is famous for its size and combination of tenderloin and striploin. A porterhouse is similar to a T-bone steak, but is cut much thicker and contains significantly more of the tenderloin filet than a T-bone.