Nankotsu is a traditional dish made with chicken cartilage, usually the parts from the breast bone or the leg. The cartilage is placed on skewers, and it's then grilled (or sometimes deep-fried) as a yakitori dish. Nankotsu doesn't have a strong flavor, and the texture is often described as very crunchy and chewy.
"No one practices the oddball art of yakitori with more authority and better results than this second-story Theater District bar and restaurant where all-business grill chefs season, skewer, and cook over charcoal every conceivable chicken part, from skin to tail. Think soft knee-bones, but it’s all delicious."
"Nankotsu - probably my favourite chicken part. Nicely done."