Flavor & Benefits Yunnan black tea also called Dianhong. There are many teas are produced in the Chinese Province of Yunnan. Many exquisite teas are grown in this province, including the famous dark Pu erh tea. This kind of Yunnan black teas very often have a strong flavor, but with a dose of honey-like sweetness and sophistication. They have much more sweetness than other black teas, and has a hint of honey, tobacco, malty and chocolate notes. Many people drink black tea for alertness and energy. There is good scientific evidence to show this works. Black tea contains caffeine. It also contains a little bit of a stimulating substance called theophylline. Both can speed up your heart rate and make you feel more alert.How to brew the premium loose black tea? Warm up the tea pot with boiling water, put about 4-5g black tea, pour small amount of boiling water into the tea and immediately pour out. This helps to damp tea leaves, wash and help them to start steeping. After that pour 8 fl.oz of boiling water that about 90-95ºC (195-205ºF) and cover tea pot for 3-5 minutes before serving.