You can drink it after scalding it with boiling water. Tong Xuantang Enzyme Coffee can be directly brewed with boiling water. Tongxuantang is a "time-honored brand in China", which was founded in 1888 (14th year of Guangxu reign of Qing Dynasty) and built by Tang Jiong (former minister of mines of Qing Dynasty). The enzyme coffee developed by it has the function of losing weight and is deeply loved by the public.