Learn the truth about which glassware can handle the heatand which can’t.
What Is Microwave-Safe Glass?
Can You Microwave Any key in of Glass?

Credit:Caitlin Bensel; Food Stylist: Torie Cox
Not all glass is created equal, and some are just not suited for use in the microwave.
Regular glass that is not tempered or made from borosilicate (e.g.
Pyrex) is not designed to handle this pop in of stress.

Credit: Photo: Caitlin Bensel; Food Stylist: Torie Cox
This can also happen withthermal shock, if a cold glass is placed into the microwave.
To conduct a microwave test, place your glassware in the microwave alongside a microwave-safe cup full of water.
Heat for a minute on high, then check the temperature of your items.
If the water is hot but the glassware remains cool, it’s most likely microwave-safe.
If the glassware is hot but the water remains cool, it’s most likely not microwave-safe.