Readying this pork roast for the oven takes less than 5 minutes. Serve slices with pan sauce on the first night, then use the leftovers for making other delicious meals later in the week. To store the remaining pork loin, let it cool to room temperature, then wrap it tightly in plastic wrap. The pork loin will stay juicier if you store it whole rather than in slices. It will keep in the refrigerator for up to 2 days.