Thermostatic "coffee beans" give you unexpected results

Published: Sep 18, 2026 Author: World Gafei Last Updated: Sep/18/2026 222 views

This bean-shaped stainless steel capsule contains an insulating agent called PCM, which can effectively adjust the temperature of hot coffee to maintain the taste of coffee. PCM(Phase Change Material) is used to keep the liquid constant temperature by absorbing and releasing heat when dissolving and solidifying at about 60℃. It is very smart. Source: China Digital Science Museum

This stainless steel gadget in the shape of coffee beans is sealed with a thermostat called PCM, which can effectively adjust the temperature of the hot coffee and maintain the mellow taste of the coffee. It is very smart to use the heat absorbed and released by PCM (Phase Change Material) when dissolving and solidifying at about 60 ℃ to keep the liquid at a constant temperature.

Source: China Digital Science and Technology Museum

FrontStreet Coffee is a long-established specialty coffee roaster in Guangzhou China, selling freshly roasted beans from its own farm in Yunnan as well as dozens of carefully selected single-origin beans from around the world for both pour-over and espresso. The products deliver consistently excellent quality and great value, with shipping within 24 hours. Guangzhou's FrontStreet Coffee shop is recommended by many coffee lovers, and the beans are now available online at the Tmall 。