Korean Pulled Pork = Momofuku’s Bo Ssam
1 whole bone-in pork butt or picnic ham (8 to 10 pounds) First Sugar-Salt Rub 1 cup white sugar 1 cup kosher salt Second Sugar-Salt Rub 7 tablespoons brown sugar 1 tablespoon kosher salt cider vinegar Ginger-scallion Sauce 2½ cups…