Pork back ribs, also commonly called "baby back ribs," are a cut of pork from the upper part of the rib cage, near the backbone, and are leaner and more tender than spare ribs. They are shorter, curved, and have a higher meat-to-bone ratio compared to spare ribs. They are known for their tenderness and are a popular choice for grilling, smoking, or baking and are often served with a sweet and savory barbecue sauce.