Iberian ham. Ham was first made for the sake of food preservation, and then it was found that the preserved ham had a unique flavor before it was circulated as a food. The top ten hams in the world are Iberian ham, Parma ham, Xuanwei ham, Jinhua ham, Saint Danny ham, Black Forest ham, Bajana ham, Rugao ham, York ham and Virginia ham. Because the feeding process is clean, Iberian pigs only eat nuts and grass when they grow up. This kind of pork tastes special and sweet, and its taste is a little different from that of traditional pork. With the help of smoked or pickled animal legs and a series of harsh production techniques, Jinhua ham and Xuanwei ham have been formed through continuous improvement by ham masters in past dynasties.