Why Does Pu-erh Tea Produce White Foam on the Surface When Brewed?
Why Does Pu-erh Tea Produce White Foam on the Surface When Brewed? When brewing Pu-erh tea, many tea enthusiasts notice the appearance of white foam on the surface. This phenomenon primarily stems from two causes: the intrinsic qualities of the tea leaves themselves and human factors during the production process. Firstly, tea leaves contain saponins, which natural...

Tea News · Feb 07, 2026