Are Canning Jars OK for Freezing?

by Sandi
(Windsor, CO, USA)

Question: I'm wondering if I can use glass canning jars for freezer storage.

Answer: Hi Sandi,

You can use canning jars for freezer storage but you must leave head space. That extra space is critical because if you don't leave enough space when the food freezes and expands it will crack the jar.

Also be careful bringing the glass from one extreme temperature to another. Putting a hot jar in the freezer or a frozen jar in the microwave or in hot water can make it break.

Canning jars are not my favorite freezer containers because you have to thaw your food to get it out of the jar, unless you get jars with straight sides.

Plus canning jars take a fair amount of space and don't stack all that well in the freezer. Square and rectangular shapes are better.

So, if you got 'em than use 'em, but don't buy canning jars for the freezer for everyday use.

Hope that helps,

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Use only wide mouth straight side jars...ones with the shoulders will break all the time..

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This website on freezing foods gives good insight on various things that you should look for while canning and freezing food. The reference about leaving head space in canning jars is very true, else the jar will crack when the food expand on cooling.
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It is not good to use canning jars as freezer containers. Glass jars can be break so it is also not a good option. Anyways there are many freezer friendly jars available in the market and a good option. Thanks for frozen food recipes; they are blessings for working person like me. I am usually very busy that I probably looks for person who can who will write my paper for me. Thanks for diabetic recipes.

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Additionally be watchful bringing the glass starting with one compelling temperature then onto the next. Putting a hot shake in the cooler or a solidified container in the microwave or in boiling point water can make it break.
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The reference about leaving head space in canning jars is very true, else the jar will crack when the food expand on cooling.
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