Things You'll Need
Airtight container or heavy-duty freezer bag
The candy in peppermint bark stores well at room temperature with a simple covering of plastic, but the "bark" in peppermint bark -- the chocolate -- doesn't last long when exposed to oxygen, light or heat. So, storing peppermint bark for maximum shelf life requires an airtight container and a dark, cold place -- in other words, a refrigerator or freezer. Wrap peppermint bark as soon as it cools if you don't use it right away.
Break the peppermint bark into large pieces.
Wrap each piece of bark in wax paper then wrap it titghtly in plastic wrap.
Place the wrapped bark in an airtight container and store it in the refrigerator up to two weeks. To increase the bark's shelf life to six months, store it in a heavy-duty freezer bag in the freezer