>> salt is the only preservative allowed before the hams are aged for at least 14 months. but that foggy air wafting around them and doing its magic. >> they are skewering the hams with one of the tools of their trade, a horse bone, clean and scentless, to check for quality. >> this may seem like the best job in the world, but it's also deadly serious. dna tests are now mandatory to check the pedigree of these pigs, because of widespread corruption. back in 2017, a criminal racket was exposed, hustling fake