Join Rick Martinez in the Bon Appétit Test Kitchen as he makes pork tamales. You can make masa, a dough made from ground corn, in two ways: instant and fresh. Fresh yielded the best corn flavor and best texture, but you can use corn masa flour too, which is easier to find. You can find fresh masa and dried corn husks at tortilla stores/factories, international sections at larger stores, or online. Whichever masa you choose, be sure to save some of the chile purée from the pork filling.