Freezing delicate foods like fresh fruits or meats is a great way to preserve these items for a longer time than the refrigerator can provide. Unfortunately, if not frozen properly, the chill of the freezer can inflict freezer burn on your poor groceries. You may have noticed dull, grey color patches on food kept in the freezer, but what exactly is freezer burn?
Freezer burn occurs when the thin layer of moisture on the outer layer of most foods evaporates into the freezer, causing the food to dry out in those stripped areas. The result is a white or brownish spot on the surface of the food, which, though not harmful to eat, certainly looks unappealing. Freezer burn can also affect the texture of the food and make it taste bland and flavorless.
Lucky for fans of the freezer, preventing freezer burn is very simple: You must keep all parts of the food completely shielded from the dry, cold air, which you can do by wrapping it tightly in plastic wrap or aluminum foil!
Freezer Burn [Wikipedia]
What is “freezer burn?” [Everyday Mysteries]
What Is Freezer Burn – Causes & How to Prevent It When Freezing Food [Money Crashers]
Food Science: What is Freezer Burn and How to Prevent It [The Kitchn]