Pork ribs are a lower cost, intensely flavorful bone-in cut that must be slow cooked until tender.  Spare ribs are larger, fattier ribs than the baby backs, with a rich, meaty flavor. Iberico pork spare ribs are naturally smaller than conventional pork ribs but more delicious. These spare ribs are a St Louis cut, which means they have been cut down & squared off from the whole spare rib rack, making them easier to cook & eat.