Freezer burn is a common problem caused by food packaging. Food dehydrates due to exposure to the air in the freezer. Standard supermarket packaging for many foods is not designed to prevent dehydration. If you intend to store food in your freezer for more than a few days, you should place the food in airtight containers or zippered plastic bags specifically made for food preservation and freezer storage. It is absolutely safe to cook or eat freezer-burned food. However, most people find that the dehydration process destroys the food's taste and texture. Dehydrated meat is said to be tough and tasteless after cooking.