Tacos de costilla are Mexican tacos made with costilla, which translates to "rib" in English. Typically, this refers to beef ribs, but it can also include pork ribs depending on regional preferences or individual tastes.
The ribs are seasoned and cooked until tender—often slow-cooked, grilled, or braised—to easily pull the meat off the bone. Once cooked, the rib meat is chopped or shredded and then placed on small, warm corn tortillas. Tacos de costilla are commonly garnished with chopped onions, cilantro, and a squeeze of lime, much like other traditional Mexican tacos.