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Oolong

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Oolong tea is a traditional semi-oxidized Chinese tea made from the *Camellia sinensis* plant.

Oolong tea leaf
Oolong tea leaf

It occupies a unique position in the world of tea. It shares characteristics with both green and black teas. Oolong often has lighter flavor notes than black tea. However, it is frequently more complex in taste than green tea. This balance of properties makes it a highly valued beverage. It is especially popular in southeastern China and among ethnic Chinese populations in Southeast Asia.

The production of oolong is a precise and careful mechanical process. It involves several repeating stages to achieve specific levels of bruising and browning. The process begins with withering the leaves under a strong sun. This is followed by allowing a specific amount of oxidation to occur. Oxidation is the chemical process that changes the color and flavor of the leaves. The degree of oxidation is controlled by the length of time between picking and the final drying. This level can range from 8% to 85% depending on the variety.

Mi Lan Xiang Oolong Tea cropped
Mi Lan Xiang Oolong Tea cropped

After oxidation, the leaves undergo rolling, shaping, and firing. This requires much more attention to timing and temperature than the production of black tea.

Oolong leaves are usually formed into one of two distinct physical styles. Some varieties are rolled into long, curly leaves. This style is considered the more traditional method. Other varieties are "wrap-curled" into small beads that each possess a tail.

Oolong tea leaf
Oolong tea leaf

These different shapes and processing methods result in a wide range of flavors. Some oolongs are sweet and fruity with honey aromas. Others may be woody and thick with roasted aromas. Some varieties remain green and fresh with complex aromatic profiles. These variations depend on horticulture and specific production styles.

The history of the name "oolong" is not universally agreed upon. It may have originated from a tribute tea called Dragon-Phoenix Tea Cake. The name "oolong" replaced older titles when loose tea became fashionable. Because the leaves were dark, long, and curly, they were called "Black Dragon" tea. This eventually led to the modern name.

Tieguanyin2
Tieguanyin2

The term was first recorded in the 1857 text *Miscellaneous Notes on Fujian* by Shi Hongbao. In France, the tea is sometimes referred to as "blue tea." In Taiwan, it has been known as "dark green tea" since the early 2000s.

In China, tea production is concentrated in major historical centers like the Wuyi Mountains and Anxi County. The Wuyi Mountains produce some of the most famous and expensive cliff teas. These include Da Hong Pao, also known as "Big Red Robe," which is a highly prized Si Da Ming Cong tea.

HGY Oolong tea leaf close
HGY Oolong tea leaf close

Other notable Wuyi varieties include Shui Jin Gui, Tieluohan, Bai Jiguan, Rougui, and Shui Xian. Anxi County is home to Tieguanyin, or "Iron Goddess of Mercy," which is one of the Ten Famous Chinese Teas. In Guangdong Province, the Dancong family of teas is noted for its ability to imitate the fragrances of flowers and fruits. These include scents like orange blossom, orchid, and grapefruit.

Taiwan has a robust oolong industry that expanded rapidly since the 1970s. Because the island has high, steep mountains and variable weather, the tea quality changes by season. High-elevation cultivation produces unique, sweet tastes that fetch premium prices.

Jin Xuan oolong tea steeping in gaiwan
Jin Xuan oolong tea steeping in gaiwan

One famous variety is Dongfang meiren, or "Oriental Beauty." This tea has potent aromatics caused by increased levels of terpenes. These terpenes result from the tea plants being attacked by Jassid insects before picking. Another unique variety is Jin Xuan, known as "Milk Oolong." It has a creamy, smooth taste, though it contains no actual milk.

Brewing oolong requires specific techniques to bring out its complexity. A common method is the gongfu tea ceremony, which uses a small steeping vessel. These vessels include a gaiwan or a Yixing clay teapot. This method involves a higher leaf-to-water ratio and multiple short steepings. For a single infusion, steeping times of 1 to 5 minutes are recommended. The water temperature should range between 80°C and 100°C.

Tieguanyin2
Tieguanyin2

Oolong also contains caffeine, though the exact content varies based on terroir and processing. Some semi-oxidized varieties even contain teaghrelins, which are compounds that can bind to ghrelin receptors.

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🖼️ Images & Media (6)
File:Oolong tea leaf.jpg
Oolong tea leaf.jpg
File:HGY Oolong tea leaf close.jpg
HGY Oolong tea leaf close.jpg
File:Qi Lan Oolong tea leaf.jpg
Qi Lan Oolong tea leaf.jpg
File:Tieguanyin2.jpg
Tieguanyin2.jpg
File:Mi Lan Xiang Oolong Tea cropped.jpg
Mi Lan Xiang Oolong Tea cropped.jpg
File:Jin Xuan oolong tea steeping in gaiwan.jpg
Jin Xuan oolong tea steeping in gaiwan.jpg
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