Can You Microwave Glass: Practical Tips in Using Glassware at Home

Whether it is a leftover pasta from a party you hosted last night or a roast meat you took out from a restaurant dinner yesterday, the microwave provides the best place for warming food, making them better to eat. However, it is important to note that you cannot just microwave anything because of the safety issues that are involved.

Can you microwave glass? This is perhaps one thing that many of you are curious about. We will tackle this question in the rest of this post and we’ll also give you some words of wisdom on how to take care of your glassware.

Can You Microwave Glass

Yes, you can microwave glass. However, this does not mean that you can microwave all types of glass. At the end of the day, the best thing that you can do is to consult with the label or instructions from the manufacturer to know if you can put it in the microwave.

Let us first talk about glass that you cannot microwave. This is especially true in the case of glass with metal accents or handles. Those that contain lead are also not microwave-safe. If the glass is too thin and fragile-looking, this is another indication that you should refrain from microwaving.

Generally, however, you can microwave glass without being worried that it will break or will cause toxic effects on the food. Most of them are made from tempered materials, which is exactly the reason why they can withstand the heat.

How to Know if Glass is Microwave-Safe

This can be a tricky process, especially for people who do not know a lot in the kitchen. The easiest thing to do is to check the dish. More often than not, there is a logo or warning that will say if you can microwave the glass or not. Always follow what is stated by the manufacturer.

The thickness of the glass is also an important indicator. In this case, you will have to use your common sense. If the glass is thin and if it looks that it will easily crack when subjected to extreme heat, just do not microwave it.

Inspect the glassware. If it is made from all glass, this could be an indication that it is safe to heat in the microwave. If there are parts that are made from plastic, metal, or stainless, you should be cautious.

Words of Caution about Microwaving Glass

One of the most important things to keep in mind is that you should never put the glass directly in the microwave after taking it out from the freezer. You have to give time for the molecules to cool before they will be exposed to heat.

It is also important to pay attention to the contents of the glass dish that will be heated. If it is frozen, give it time to thaw. You can also heat it within just ten seconds and mix occasionally. If you heat it longer, glass may absorb most of the heat instead of the food, and hence, the glassware can end up breaking.

Use a pot holder when handling the glass straight out of the microwave. Chances are, it will be hot. If you hold it with bare hands, you will not only end up hurting yourself, but you might also accidentally drop the glassware.

If the glass dish does not come with a lid that you can microwave as well, you should find any other suitable cover. This is important to make sure that flavor will be trapped in what you are heating. It also promotes even distribution of heat and will eliminate the possibility of splattering.

Refer to the instructions from the manufacturer of the oven. By doing this, you will know the things that you can and cannot do, not only when microwaving glass, but in the case of dealing with other materials as well.

Below is a short video that shows general tips about safety in using a microwave.

Other Tips in Maintaining Glassware

Aside from knowing if glass is microwave-safe, you should also be aware of how to handle and take care of such material. When washing your glassware, see to it that you use mild soap. Rinse it thoroughly. Any soap residue on the surface can cling to the food, and hence, will give it a foul taste and odor.

When storing glass dishes, avoid stacking them on top of each other, especially the heavy ones on the top of the fragile glass. Obviously, the weight on the top can cause pressure to those at the bottom and can lead to breakage.

Do not use glass on the stove. Meanwhile, if you are using it in the oven, preheating is necessary. This will lessen the likelihood that it will break. Also, it is important to make sure that there is a cloth or towel underneath the glass dish, especially when it is hot.


Can you microwave glass? Now that you are done reading this guide, we hope that you are able to learn a thing or two. In a nutshell, here are some of the most important things we have earlier discussed:

  • Yes, it is alright to microwave glass. However, those that contain metal accents, lead, and fragile-looking should never go in the microwave.
  • We have also talked about some of the safety reminders when handling glass. One of the most important is to make sure that it cools down when it is straight out of the freezer. The same thing is true for the food inside the glassware. Also, always use potholders as glass is a conductor of heat.
  • Proper care and maintenance for glassware has also been briefly discussed. Wash it using mild soap only to avoid foul smell and odor. Do not stack them on top of each other. Pay attention to what the manufacturer says if you are ever in doubt.

Did you enjoy reading this post? Is there anything else that you would like to add? Feel free to leave a comment below.

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