Have you ever removed a tray of meat from the freezer only to find discoloration and ice crystals? If you’ve forgotten about a carton of ice cream in the freezer for any length of time, you may have opened it to find its surface covered in ice. Freezer burn, we tend to call it.
Freezing food is a great way to extend the life of our perishable items, but when you freeze foods, you stand the chance of having your food become freezer burnt.
Freezer burn presents itself as discoloration on the surface of frozen foods such as bread and meat. Ice crystals are another sign of freezer burn, which we can find in frozen produce and ice cream.
To understand freezer burn a bit better, it helps to know more about how the freezing process works. When food is frozen, most of the water content of that food is converted to ice. Some of the water, though, is converted directly to water vapor and is released from the food all together. This process is called sublimation.
This water loss causes food to become dehydrated over time, like ice cubes that eventually shrink when they’re left in the freezer. So, in essence, this process freeze dries parts of foods, resulting in freezer burn.
In air-tight containers (like ice cream), that water vapor forms frost on the insides of the container and/or on the surface of the food. In open containers or containers that aren’t perfectly sealed, the vapor that escapes actually leads to that build up of ice on the inside of non-frost-free freezers.
And what we’re left with is food with strange flavors that’s difficult to chew.
When you have freezer-burnt food on your hands, you should do your best to discard the areas that have been affected. But you know I just hate food waste, so let’s talk about how to prevent freezer burn all together.
Tips to prevent freezer burn
- Remove as much air as you can from packages you freeze food in. The closer your food is to its packaging, the less chance there is of it losing water.
- Don’t leave your food in the freezer longer than you have to. The longer your food is frozen, the greater the chance of it becoming freezer burnt.
- Set your freezer at the lowest setting that you can in order to help avoid sublimation from occurring, as it’s less likely at lower temperatures.
- Always use high quality zipper-style bags to freeze food, and try to wrap foods in a bag that fits just right.
- Don’t place hot food in the freezer. You risk increasing the temperature of your freezer, and some of your frozen foods may even start to thaw.
- Avoid opening the freezer door more than it needs to be opened. This will help keep the freezer temperature from fluctuating, which can lead to freezer burn.
Making meals out of the meat/poultry/fish and produce you buy as soon as you get them home from the grocery store is another way to ensure that your food doesn’t get wasted and forgotten about at the back of the freezer.
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