The beauty of slow-cooked pork is that it becomes so tender you can shred, or "pull," it with a fork. If you're lucky enough to have leftovers, wrap up the burritos in foil and freeze them up to 2 months. To reheat, transfer the wrapped burritos to a 350°F. oven for 20 to 25 minutes. Leftover shredded pork can also be stored in the refrigerator for up to 4 days or frozen up to 4 months.