Cocoa tea (Camellia ptilophylla Chang), a natural decaffeinated species of tea – Recommendations on the proper way of preparation for consumption oleh Xiao-rong Yang, Yuan-yuan Wang, Kai-kai Li, Jing Li, Cheng-ren Li, Xiang-gang Shi, Chun-Hay Ko, Ping-chung Leung, Chuang-xing Ye, Xiao-hong Song