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If you’ve ever needed to conveniently chill a heat drink in a glass bottle, you’re probably currently aware that the freezer will perform the trick. However if you occur to forget the you put your drink in there, you might end up v a shattered bottle.

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Is this outcome as result of the properties of glass itself, or could it be the the liquids freeze in the bottle are bring about the glass to break?

While this to represent a pretty details example, glass is becoming much more and more popular as a warehouse medium, whether storing foods items in glass jars for long-term storage or in glass containers for short-term keeping.

In this article, let’s uncover out whether or no it’s safe to put your glass bottles and containers in the freezer, and what you have the right to do to keep them from breaking.

Can Glass go in the Freezer?


So, what’s walking to occur if you placed a glass container in the freezer? Well, that’s completely dependent top top a variety of factors, such as the contents and the early stage temperature of the container.

To answer the concern above, yes, glass can go in the freezer without problem for breaking, as lengthy as particular conditions room met. Let’s take it a look at these problems next.

Why go Glass sometimes Break in the Freezer?

When excellent the appropriate way, her glass containers shouldn’t break as soon as frozen. Why then does this occur to so countless people? Well, there space a couple of things that have the right to lead to this.

The first, and also most obvious, is the components of the glass container. Unlike most things, water actually expands as that freezes. V that gift said, if her container contains liquid (or foods items high in water content), it could break because of the press put on it by the liquid inside of it.

Also, no all glass is recommended for freezing. When you can not operation into any type of issues with non-tempered glass, it’s lot safer to usage tempered glass, once possible.

Tempered glass is much stronger and doesn’t contain small pockets that air, favor non-tempered glass, which deserve to expand and also contract v temperature fluctuations.

Another factor for glass break in the freezer is when a container is subjected to a rapid temperature change. For example, if you take a heat casserole dish and also place it into the freezer, you’ll operation the risk of breaking the casserole dish due to the far-reaching change in temperature throughout a short period of time.

How to save Glass from break in the Freezer

In the section above, I spanned a few reasons why glass containers have tendency to break when frozen. Now, let’s take it these observations and turn them into some easy-to-follow rules to use any type of time you frozen glass.

1 – usage Tempered or Freezer-Safe Glass


Not all glass is created equal. If you setup on freezing foods or liquids in glass jars or containers, always opt for tempered glass or glass labeled as freezer safe, like this set, i beg your pardon is labeled as safe for the freezer, microwave, oven, and also dishwasher.

As discussed earlier, non-tempered glass includes tiny pockets that air, which can expand and also contract as the temperature that the glass changes.

Tempered glass, on the various other hand, is much stronger and also can take care of temperature transforms just well (assuming the remaining pointers in this post are maintained in mind). Canning jars are frequently safe for freezing, so either look because that these, or look because that something labeled together freezer safe.

2 – leaving Headspace

As I discussed above, once water freezes, it expands. This is just one of the most common reasons for glass division or cracks in the freezer. To protect versus this, merely leave some room for growth in her food container. This is frequently referred to together headspace.

By leaving a little bit of room at the height of her container, the components will simply expand upward, filling the empty space. Just be mindful of the following tip as well…

3 – Don’t Tighten the lids Immediately

When the contents of your container expand, they’ll put push on the wait in the container as well. If friend tightly seal your lid, this push will be put on the glass itself, potentially resulting in a break.

To prevent this indigenous happening, just leave your lids loose on her containers till the components are completely frozen. This can take 24 hours or longer, depending upon the type and amount of food or fluid in her container. When frozen, walk ahead and tightly seal the lid.

4 – stop Containers through Shoulders


If you’re making use of mason jars for storage, which are really popular this days, look because that ones the don’t have rounded shoulders ~ above the top. Instead, look for ones that have actually straight sides with a nice large opening in ~ the peak of the jar. This set from round is a perfect example.

If you usage jars with shoulders, simply make certain you leave plenty the empty room for expansion below the start of the bottom curve of the shoulders. This way, once the liquids start broadening upward, they don’t run into much more resistance (which is the problem you might face with jars that have actually shoulders).

5 – adjust Temperatures Gradually

While glass can safely be placed in the freezer, it’s vital that you’re careful about how quickly the glass transforms temperatures. Never ever put a warm glass container directly in the freezer.

If possible, first let her glass containers cool come room temperature. Native there, ar them in the refrigerator for several hrs to cool even further. As soon as cooled, place them in the freezer.

When place glass containers in the freezer, don’t placed them near any kind of freezing components, and don’t put them directly on optimal of various other frozen items. This will subject the glass to also drastic of a adjust in temperature, which could lead to a glass break.

When thawing her frozen items, you’ll want to turning back the procedure by very first loosening the lid, then placing the container in the refrigerator to thaw, then finally allowing the container to heat up come room temperature.

6 – stop Narrow Containers

The logic to this reminder is comparable to the one above around using wide-mouth containers. When the liquids in your container expand, they need room for the expansion. By using a tall, narrow container, the liquids near the bottom of the container must work more tough to broaden upward.

A an easy trick to rise the growth area that appears to occupational well for a lot of of world is to put your container contempt on it’s next in the freezer. By law so, you’re providing the components of the container a bigger area to increase upward.

7 – Put space Between Containers

The last guideline for freezing glass dare or containers is come leave space between them. If you’re freezing numerous glass jars in ~ once, don’t put them right beside each various other in the freezer.

Instead, leave part “breathing room” in between them come prevent any type of pressure changes from one container to have actually an result on the containers sitting directly next come it.

What space the benefits of Storing foodstuffs in Glass Containers?


Now the you understand that it’s possible to save foods and also liquids in glass containers in the freezer, let’s take a look at some reasons why you might prefer glass over other storage mediums.

1 – They’re Non-Toxic

When save food, one point you should be concerned around are any type of toxins that can potentially leach into your food native the surface of the warehouse medium. The same goes because that your cooking surfaces, such as pans and baking sheets.

People have actually become an ext aware that the chemicals found in plastic food containers, therefore you’ve probably noticed a lot of packaging that consists of messages like “BPA Free.” As long as you buy her glass containers from reputable manufacturers, friend don’t even have come worry around toxicity at all.

2 – They’re straightforward to Clean

Another benefit of glass containers is the they’re fairly easy to clean. Simply let lock soak in hot water for a bit, climate wipe off the surface.

Because glass is non-porous, the won’t grab onto food particles. This results in a surface ar that’s less complicated to clean, and also one the doesn’t retain odors.

3 – They’re scratch Resistant

We have plastic food storage containers at house that space covered in scratches. Not just does this look at bad, however it adds tiny crevices that have tendency to stain easily.

With glass, your main issue will be to save it indigenous breaking. Friend won’t have actually to deal with scratches, favor you carry out with plastic containers.

4 – castle Don’t Absorb Odors

As you’ve probably noticed, plastic storage containers regularly take ~ above the odor of the foodstuffs that were formerly stored in them. Those foods additionally often stain the surface of the containers.

With glass, you can quickly clean the surface, and also you’ll be left with a container the doesn’t maintain any type of odors native the items previously stored inside of them. This is due to glass being non-porous.

5 – They stay Crystal Clear

While plastic containers may seem really convenient, one point that’s no so good about them is that it’s complicated to see the contents inside of them. This just gets worse over time, as plastic regularly stains.

With glass containers, girlfriend can conveniently see what you have actually stored in them, do it more likely that you won’t merely forget around them and let them get buried in the ago of your freezer.

Also, since they’re so simple to clean, girlfriend don’t have actually the trouble that you have with plastic containers wherein the surface gets cloudier end time.

6 – They’re reasonably Inexpensive

Glass jars have actually become an extremely popular because that food storage end the last several years, and with good reason. In addition to the other reasons currently mentioned, they’re durable, and also they deserve to be bought in mass for a fairly low cost.

When you factor in just how long they last (more on the below), the cost of a pack of jars is even far better than it may seem at first.

7 – They’re Reusable

One of the best benefits that glass is the it’s reusable. Unlike other species of storage containers that have tendency to wear under over time, glass have the right to be supplied over and also over again.

Also, as mentioned above, when glass is correctly cleaned, it nearly looks new and doesn’t bring over any of the odors from previous uses.

Final Thoughts

Because the the countless benefits of glass, such as being cost-free of harmful chemistry that can potentially leach right into our foods, it’s perfect storage medium to use. Return you’ve probably heard horror stories of glass breaking in the freezer, you don’t need to suffer the same fate.

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As long as you take it a couple of precautions, such as using tempered glass, leaving some room because that expansion, and also avoiding rapid temperature changes, you can safely and also easily keep your excess foods items in glass containers in the freezer.