Please take a look at how easy it is to prepare the costillas:

https://www.youtube.com/watch?v=o9CbLUzD9tA&feature=youtu.be

Located in the thoracic cavity, there are two costillas per pig. The costillas are the same cut as spareribs here in the U.S. Costillas are cut with one uniform section, and two tapered end pieces.  This meat stands out for its intense juiciness and flavor. Costillas contain a high bone to meat ratio; the meat is highly marbled and infused with the acorn rich flavor.  Costillas are sold by the rack, which is cut into three pieces as shown in the picture with white background.  Each rack weighs approximately 2.5 LBS.