To prevent a glass teapot or coffee pot from breaking due to thermal shock, there are a few key steps you can take:

Gradual temperature changes: Avoid exposing the glass teapot to extreme temperature changes, such as pouring boiling water into a cold teapot or placing a hot teapot on a cold surface. Gradual temperature changes are essential to prevent the glass from cracking.

Preheat the glass teapot: Before adding hot water, preheat the glass teapot by rinsing it with hot water. This helps to bring the glass to a higher temperature and reduces the risk of thermal shock.

Avoid sudden temperature changes: Avoid placing a hot glass teapot directly into cold water or placing a cold glass teapot directly on a hot surface. This sudden temperature change can cause the glass to crack.

Handle with care: When handling a glass teapot, be gentle and avoid banging or dropping it. This can weaken the glass and increase the risk of breakage.

Choose a high-quality glass teapot: Not all glass teapots are created equal. Choose a high-quality teapot made from borosilicate glass, which is known for its durability and resistance to thermal shock.

By following these tips, you can help prevent your glass teapot from breaking due to thermal shock and extend its lifespan.