Both T-Bone and Porterhouse are made up of two different cuts of meat separated by a T-shaped bone running through the middle. Hence the name T-Bone.
The T-Bone / Porterhouse is a perfect steak for grilling. Generous amounts of fat keep the steak moist and juicy during cooking. Meanwhile the tenderloin side stays tender and flavorful. (As long as it’s cooked properly.) Due to the variety of textures and flavors this steak is a hero at any BBQ party, giving you the best of both worlds.
The only difference between a Porterhouse and a T-Bone is that The Porterhouse has a larger tenderloin side and generally is a larger cut of beef. You could say it’s the T-Bones older brother.