In addition, as an Amazon Associate I earn from qualifying purchases. But if you happen to forget that you put your drink in there, you might end up with a shattered bottle. Is this outcome due to the properties of glass itself, or could it be that the liquids freezing in the bottle are causing the glass to break?
While this represents a pretty specific example, glass is becoming more and more popular as a storage medium, whether storing foods in glass jars for long-term storage or in glass containers for short-term keeping.
To answer the question above, yes, glass can go in the freezer without concern for breaking, as long as certain conditions are met. Why then does this happen to so many people? Well, there are a few things that can lead to this. The first, and most obvious, is the contents of the glass container. Unlike most things, water actually expands as it freezes. With that being said, if your container contains liquid or foods high in water content , it might break due to the pressure put on it by the liquid inside of it.
Also, not all glass is recommended for freezing. Another reason for glass breaking in the freezer is when a container is subjected to a rapid temperature change. In the section above, I covered a few reasons why glass containers tend to break when frozen.
Not all glass is created equal. If you plan on freezing foods or liquids in glass jars or containers, always opt for tempered glass or glass labeled as freezer safe, like this set , which is labeled as safe for the freezer, microwave, oven, and dishwasher.
As mentioned earlier, non-tempered glass contains tiny pockets of air, which can expand and contract as the temperature of the glass changes. Tempered glass, on the other hand, is much stronger and can handle temperature changes just fine assuming the remaining pointers in this article are kept in mind. Canning jars are typically safe for freezing, so either look for these, or look for something labeled as freezer safe.
As I mentioned above, when water freezes, it expands. This is one of the most common reasons for glass breaks or cracks in the freezer. To protect against this, simply leave some room for expansion in your food container. This is often referred to as headspace.
By leaving a bit of space at the top of your container, the contents will simply expand upward, filling the empty space. Just be aware of the next tip as well…. If you tightly seal your lid, this pressure will be put on the glass itself, potentially leading to a break. If you have to use the latter, fill them 1 inch below the shoulder. Follow the freeze-fill line. Allow the contents and the jar to cool before storing in the freezer. Even if mason jars are more capable of handling temperatures, they can still break if the temperature change is too drastic.
You can leave it loose and then close it later. Lastly, if you have access and can afford it, you can use liquid nitrogen. If you want the cold layer of frost, just put it in the freezer for an hour or longer. Others recommend dipping the glass in water first and shaking off the excess before freezing. For sugar frosting, first, have the sugar or salt on a separate plate. Next, dip the rim of the glass into some liquid or juice.
You can also rub lemon along the edge. Lastly, dip the rim into your sugar or salt. However, there are some beers, like lagers, that taste better when served colder. So remember, your glass storage container might break in the freezer unless it is tempered glass.
To frost glasses, you only need to put them in the freezer for 30 minutes. I admittedly know nothing about crystal whatsoever. Hopefully someone can chime in with their thoughts! I find your suggestions very helpful. Can you please clarify your suggestion to leave the lid a little loose and also to freeze the jar on its side.
Wont the liquid leak out if the lid is to on tight? I must have missed this comment! Test on the counter first, just in case! Oh no! So, put the contents in the dish, allow to cool to room temp, then fridge overnight, then freeze, then suck the air and freeze for longer term. That should work! Thanks a lot for the reply. Unless I use a plastic or stainless steel container. Thank You, for all of the information on freezing in glass jars.
I have been freezing sauces and soups in Ball jars for years, with out a jar breaking. Recently I have had several jars break. I have used the same freezers and methods to freeze the items. Thanks to you, in the future I will be sure to buy only tempered jars. I had a couple of problems with a clean bottom jar break when thawing. NO breakage. When I find milk at a good price I stock up and freeze some of it. I just found this one broken in my freezer.
Followed all your steps except for it being straight sided. My guess is that the shape of the jar is what caused it to break. Was the milk past the shoulder of the jar? Have you considered pouring into smaller jars? Yes, I had it about at least an inch below the shoulder. The difference this time was the freezer I had it in the house freezer, not the chest and it was almond instead of cows milk.
And I had it against the wall of the freezer. I will try smaller jars. It was a real pain trying to clean it up without getting glass everywhere! Whoa girl — lots of rules — LOL! I am 68 years old make all of our own food and never had a cracked, broken or exploding jar.
My advice — just use common sense, which seems not to be so common any more. LOL — lots of variables! Commons sense!
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