Safely Storing Glass Jars in a Freezer—Without Breaking Them

Glass jars are no doubt the ultimate choice for storing food. Nobody wants plastic containers leeching toxins and chemicals into their food items.

But some people may still choose plastic containers, only because glass jars have the habit of breaking when put into the freezer.

Luckily, if you’re careful enough, you can prevent glass jars from breaking in the freezer and do not have to compromise on your health.

Just in case, if you do find a glass jar broken with food in it, you must follow FDA guidelines when dealing with it, as consuming food from a broken glass jar can be dangerous.

Here are certain tips to freeze in glass jars:

Cooling the food

Never put hot food straight from the oven or stove into a glass jar. It could give the glass jar a temperature shock and make it weak.

Only when the food is cooler, should you pour it into the jar. But still don’t put the jar in the freezer.

When the jar itself cools down, only then put it into the freezer.

Preventing extreme temperature changes is the key to protecting glass jar from breakage.

Don’t fill the whole jar

Filling the jar completely is a mistake most people make. When the food freezes it expands, thereby shattering the glass.

Always fill in less food than then the capacity of the jar. And by less, we mean a lot less than you think. Keep at least 3 inches distance between the top and the food. If you are using a jar with shoulders, then keep the food below the shoulders.

Use mason jars

Shoulders can create a lot of pressure on the jar when the food freezes. So mason jars with wide mouths and no shoulders are a much smarter choice for storing food.

When frozen food is taken out and put into the microwave oven to heat up, the sudden temperature change can also break the glass. With mason jars, you won’t have to heat the frozen food in the jars as you can easily take the frozen food out and put it in a different utensil for heating.

Don’t tighten the lid

Glass jars hold up better when the lid is slightly loose, otherwise they tend to break. However, once the food is frozen you can tighten the lid without any problem.

Leave Space in between jars

For unknown reasons, if jars are touching in the freezer they tend to break more often. The simple solution to this problem is leaving space in between the jars when putting them in the freezer.

You can keep your jars in the cardboard box that they came in, or you can put them in clean socks to prevent them from rocking against each other.

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