But be sure all the chicken is piping hot. Next time only reheat what you plan to use and freeze the remainder right away. How do I reheat meat that has been frozen after the initial cooking? I always end up with dried out, tough meat slices? Thaw your cooked meat, covered, in the refrigerator.  If reheating in the oven, cover with foil and add a bit of gravy or broth to keep the meat moist. The meat can also be reheated, covered with plastic food wrap in the microwave, adding some moisture, if desired. Be sure to reheat to a safe 165F (74 C). We are preparing for a wedding this afternoon. The bride and groom want to serve hamburgers and hot dogs to keep with the Fourth of July tradition. They are planning to have all of this cooked before 2:00, and the wedding is not until 6:00. How do they need to keep 100 hamburgers and hot dogs fresh to feed their guests, without making them sick? And, how do you keep the hamburgers from drying out? The cooked hamburgers and hot dogs should be treated like leftover cooked meat. Spread them on shallow trays and refrigerate as soon as possible after cooking. When ready to serve, reheat them quickly to piping hot 77C/170 F. I would like to make a large spaghetti sauce et put it in Mason jars to store it on shelves.  How should I proceed to sterilize my jars with the sauce in