Can An Empty Glass Break In The Freezer?

For storing and serving food, glass is a clean, safe, and eco-friendly material. When you put it in the freezer, you risk breaking it.

If you’re wondering if you can chill your glass for a cold drink without breaking it or what type of glass might break in the freezer, then you’re in luck.

We spent a lot of time researching and giving you the answers.

If you put a glass in the freezer at room temperature or below, it won’t break.

The types of glasses that are available on the market can usually resist frosting or chilling, except for crystalware.

It is a simple answer, but you might be wondering about specific details. We will tell you why glass breaks in the freezer and what kinds of glass will or won’t break.

Some additional tips have been included for those of you who like to have your drinks in cold glasses.

Empty Glass

Why Does Glass Break Inside the Freezer?

There is a lot of physics behind it, but glass breaks when you put an object in the freezer. It is the same principle that glass follows.

Glass is not only insulation, it is also an instrument. It is not possible to release the heat inside it.

As a result, when there is a rapid temperature change, one side shrinks faster as it cools, and the glass breaks.

On the other hand, with open glassware, this is less likely to happen. In that case, all of the glass’s surface cools at the same time, so they shrink together and don’t break.

What Temperature Is Required To Freeze and Break A Glass?

The glass does not have an actual freezing point. It technically cannot be frozen because it is already solid.

It is recommended that an empty glass does not break in cold temperatures. If you are freezing a glass for cocktails, 32F/0C or a little colder should be enough.

How Long Is It Possible to Leave a Glass Inside the Freezer?

We have said that you can leave an empty glass in the freezer for as long as you need, without breaking it.

It is important to make sure the glasses are not subject to rapid temperature changes. Generally, it takes 30 minutes to an hour to get a glass of ice.

Do I Need to Freeze or Not to Freeze a Glass in the Freezer?

glassware made from soda lime will not break in the freezer even if it is freezer-safe, but it is recommended that glassware be put in the freezer for storage.

The air bubbles that are retained by the non-tempered glass are usually eliminated by tempered glass.

These glasses cannot handle temperature changes or the pressure coming from their contents.

If you want glassware that is labeled freezer-safe, you should opt for tempered glass.

Tempered glass is reinforced and thicker, which makes it more resistant to temperature changes in a freezer. There are no jagged edges on the pieces if it does crack.

Is It Possible to Put Crystal Glass in the Freezer? 

Don’t put crystalware in the freezer because it’s too thin and will break when it’s cold.

It’s lead glass, not soda-lime glass or borosilicate, which means it can’t handle temperatures like those types do. The lead content in crystalware can make it a health hazard.

The FDA doesn’t recommend that these glasses be used for storage. It’s recommended that you only use crystalware for drinking occasionally.

The drink should not be in the container for more than a couple of hours.

Lead isn’t used anymore in newer crystal glasses, instead, they use zinc oxide, potassium oxide, or barium oxide.

Are Mason Jars Freezers Safe?

Most mason jars and canning jars are safe in the freezer. They can handle the pressure of their contents better and they have thicker glass that can tolerate changing temperatures.

There is no guarantee that all mason jars will not crack. It’s a good idea to choose those that are labeled freezer safe.

If you use mason jars, there are some things you can do to keep them from breaking.

  • For wide-mouthed jars, go for straight edges. Jars with shoulders tend to crack at the curve due to the expanding contents. If you have to use the latter, place them below the shoulder.
  • Follow the line until you reach the freeze-fill section. It is there to let you know how much the jar can hold without breaking.
  • Before storing the jar in the freezer, allow the contents to cool. If the temperature changes too much, mason jars can break even if they are more capable of handling temperatures.
  • When you put it in the freezer, don’t tighten the lid much. You can let it loose and then close it.

How Can I Chill Glass Fast?

If you have to chill glasses in a pinch, the following are some tricks you can use.

  • The glass should be placed in the freezer for five minutes. It will not be frosted over, but it will be cold enough to serve drinks in.
  • You can allow the ice to sit in the glass while you prepare the drink. When the drink is ready, take out the ice and water and strain the drink into the glass.
  • If you have a bucket of ice, you can put the glass upside down for at least 15 minutes. Take it out, wipe it down, and pour the drink in when you need it.
  • Put the paper towels in a bag and wring them out. Before putting the glasses in the freezer, they should be wrapped.
  • The dry air helps chill the glass faster by removing the humidity from paper towels.

Liquid nitrogen is available if you have access and can afford it. Nitrogen insulates the glass so it doesn’t shatter, making it perfectly safe.

How to Frost Glass for Cocktails?

There are two ways to frost a cocktail: freezing the glass to get a thin, slightly opaque layer of frost on it or “sugar frosting” where the rim of the cocktail is covered with sugar or salt.

If you want the cold layer of frost, put it in the freezer for an hour or longer. If you want to shake off the excess before freezing, you should dip the glass in water first.

If you want to make sugar frosting, put the sugar or salt on a different plate. The rim of the glass should be dipped in some liquid or juice.

There is a way to rub lemon along the edge. Take your sugar or salt and dip it into the rim.

Do I Need to Serve Beer in a Frosted Glass?

When it comes to serving beer in a frosted glass, the consensus is no, unless it is to cool it from room temperature.

Frosted beer mugs can take out a lot of the flavor and add more foam because they are cooler than the ideal temperature.

Some beers, such as lagers, taste better when served cold.

Empty Glass


If you have a glass storage container, it’s a good idea to store it in the freezer.

If you put an empty glass in and there is no sudden change in temperature, it should be fine, as long as it isn’t crystalware.

If you put the glasses in the freezer for 30 minutes, you can frost them. 15 minutes is enough if you are in a hurry.

Before putting the glasses in the freezer, you can wrap them in paper towels or use an ice bath.

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