why is at-bone steak also called a porterhouse cut
Know The Difference Between A T-Bone And A Porterhouse Steak. If you've always thought that a T-Bone steak and a Porterhouse steak were the same thing, you would be mistaken. They're both from the same cut, and they both have the characteristic T-shaped bone in the centre, but this video from the folks at America's Test Kitchen explains why one costs so much more than the other.