What are St. Louis-style ribs?

St. Louis-style ribs start with spare ribs, a cut from the lower rib cage and belly area of the pig. A butcher or pit master trims them by removing the rib tips (the thin, cartilage-heavy flaps at the narrow end) and the sternum bone, leaving behind a neat rectangular slab. This trimming creates a consistent shape that cooks more evenly and presents more cleanly on a plate.

The difference from other cuts matters for cooking and eating. Baby back ribs come from higher on the rib cage and are naturally smaller and more tender, with less meat between the bones. Spare ribs in their whole form include all the untrimmed bits, making them meatier but less uniform. St. Louis-style ribs split the difference: they have more meat than baby backs and a cleaner appearance than untrimmed spares, while retaining good flavor from the belly meat still attached to the bone.

The rectangular shape allows barbecue cooks to apply consistent smoke and heat across the slab. Many Central Florida rib houses favor this cut because it serves well for both traditional slow smoking and quicker grilling methods. St. Louis-style ribs typically have a bit more bark and chew than baby backs, appealing to pitmasters who want a textured, substantial bite. Home cooks and restaurants often choose this cut for its balance of tenderness, flavor, and visual appeal.