What is oolong tea?
Oolong tea is a traditional Chinese and Taiwanese tea that is partially oxidized, typically between 20 and 80 percent, placing it in flavor profile and color between green and black teas.
Oolong occupies the middle ground between green tea and black tea, distinguished by its partial oxidation. During production, tea leaves are bruised and allowed to oxidize to a controlled degree, usually between 20 and 80 percent. This halfway processing gives oolong its characteristic appearance: rolled or curled leaves that may show edges darkened by oxidation while the centers remain greener.
The flavor and color vary significantly depending on oxidation level and origin. More lightly oxidized oolongs taste closer to green tea, with floral and fruity notes. Heavily oxidized varieties develop darker, toasted, or woody character nearer to black tea. Temperature, steeping time, and water quality all affect the final brew.
Oolong is central to tea culture in Taiwan and China, with regional styles including Tie Guan Yin, Da Hong Pao, and Wuyi Rock Tea. In Malaysia and Singapore, oolong holds a respected place in local tea service and is a standard offering at tea houses. Many cafes and tea specialists steep it multiple times from the same leaves, as oolong leaves reinfuse well and reveal different flavor notes across successive pours. The leaves are often roasted after oxidation and fermentation, adding another layer of complexity to the final cup.