There are many different types of tea; some have a cooling, slightly bitter, and astringent flavor, while others have vastly different profiles that include sweet, nutty, floral, or grassy notes Tea is an aromatic beverage prepared by pouring hot or boiling water over cured or fresh leaves of Camellia sinensis, an evergreen shrub native to China, India and other East Asian countries. Tea is also rarely made from the leaves of Camellia taliensis.  After water, tea is the most widely consumed drink in the world.

Based on TCM, tea can be used to clear heat, especially in the head region; quenches thirst, diuretic, down bear qi, disperse digestive obstruction, refresh the mind, transform phlegm and dampness, detoxifies, and harmonizes the stomach (black tea).

The preparation methods of tea are brewed,