Many of us understand that when it comes to a cold or the flu, we're most contagious before we start feeling sick; that by the time we've got a runny nose, sore throat and achy muscles, the damage to the people around us has already been done. In fact, many of us are completely wrong.
Immediately refrigerate leftover canned tuna in a glass or plastic container. Do not leave the tuna in the opened can, as it may become rusty once open. You can refrigerate canned tuna in a tightly covered container for up to two days. If you are storing your canned tuna in an unheated garage, ensure that it does not freeze during the winter months. This can cause the can to bulge or rust.
Another way to cut the risk of freezer burn is to buy vacuum-packed meats and poultry (which can also last about 2 days longer in the refrigerator). Leave seafood in its original packaging and, if possible, place on a bowl of ice in the refrigerator. However, live shellfish (like clams) should not be put on ice; open or poke holes in the packaging. To freeze seafood, slip the original packaging into a resealable freezer bag.