what cut of meat is the porterhouse steak
T-bone steak The T-bone and porterhouse are steaks of beef cut from the short loin (called the sirloin in Commonwealth countries and Ireland). Both steaks include a "T"-shaped bone with meat on each side. Porterhouse steaks are cut from the rear end of the short loin and thus include more tenderloin steak, along with (on the other side of the bone) a large strip steak. T-bone steaks are cut closer to the front, and contain a smaller section of tenderloin. The smaller portion of a T-bone, when sold alone, is known as a filet mignon, especially if it's cut from the small forward end of the tenderloin.
Strip steak The strip steak, also called a New York strip, a Kansas City strip steak (US), a sirloin steak (UK/NZ/ZA), or a porterhouse (AU), is a cut of beef steaks from the short loin from a cow. It consists of a muscle that does little work, the longissimus, making the meat particularly tender;[1] although not as tender as the nearby rib eye or tenderloin. Fat content of the strip is somewhere between the two cuts. Unlike the tenderloin, the short loin is a sizable muscle, allowing it to be cut into larger portions.