You can buy the pig skin from a butcher, any kind will doe even if they still have some fat or meat attached . The way we make them is you buy pork lard from the store and you heat it up , add a lot of salt, or to taste, fry the pork skin until they look like the ones in the potato chip isle, pretty much just eyeball it. Also you can add water to the fat and then add the skins and ears, snout, what ever you got, throw som pork meat in tere too,and boil them till they're soft and fully cooked, add a can of coke to Carmelize it, and stain it and it's done . Both ways are good, just take some practice to get them how you like them. Oh , and stir them a lot so they don't stick to the pan. We make them in a large cazo on a burner outside. Also I forgot, add som onion and lots of garlic. Cook on high flame