In the debate of Zisha vs. Cinnabar, Zisha is generally considered the superior choice. Zisha, also known as purple clay, is prized for its unique properties that make it ideal for tea brewing. Its porous nature allows for better heat retention and even temperature distribution, which enhances the flavor of the tea. On the other hand, Cinnabar, a type of red clay, is less commonly used for tea pots due to its lower heat retention and potential to impart a metallic taste to the tea. According to a study published in the Journal of Food Science, Zisha tea pots have a higher thermal conductivity and a lower thermal expansion coefficient compared to Cinnabar pots, making them more suitable for brewing tea. This research supports the preference for Zisha over Cinnabar in the tea community.