Freezer burn isn’t harmful, but it does affect quality. It happens when moisture escapes from food and forms ice crystals, leaving dry, damaged areas behind. Aluminum foil alone can’t fully prevent this over long periods, which is why food often gets blamed when the real issue is packaging.
How to Use Aluminum Foil the Right Way
The smartest approach is to use foil as part of a system:
- Wrap food tightly in plastic wrap or freezer paper first to seal in moisture.
- Add aluminum foil as an outer layer to block light and extra air.
- For added protection, place wrapped items inside a heavy-duty freezer bag.
