Oolong tea, also known as blue tea or semi-fermented tea, stands out as a uniquely distinctive category among China's major tea varieties.Produced through processes including killing green, withering, shaking green, semi-fermentation, and baking, oolong tea is a premium-quality tea. Evolving from the Song Dynasty tribute teas Longtuan and Fengbing, it was formally developed around 1725 during the Qing Dynasty's Yongzheng reign. Its flavor lingers pleasantly on the palate, leaving a sweet and fresh aftertaste.The pharmacological effects of oolong tea are notably evident in fat breakdown, weight management, and body toning. As a tea category unique to China, it is primarily produced in three provinces: Northern Fujian, Southern Fujian, Guangdong, and Taiwan. In recent years, small-scale production has also emerged in Sichuan and Hunan provinces. Besides domestic sales in Guangdong and Fujian, oolong tea is mainly exported to Japan, Southeast Asia, Hong Kong, and Macau. Now, let us unveil the mystery of oolong tea.Hope this helps.
The name "Oolong Tea" has many legends surrounding its origin.
There are roughly four possible sources: one is the place of origin; two is the tea plant variety; three is the name of the tea maker; four is the shape and color of the tea leaves.
One tale recounts a tea garden owner inspecting nearly sun-dried leaves only to discover a black dragon (wulong) there. Terrified, he dared not return for days. During this time, the leaves oxidized under the sun, transforming from green tea into something richly aromatic and delicious. The owner thus named it Oolong Tea.
Another account suggests the name originates from Su Long, the person credited with inventing the oolong tea processing method (nicknamed "Black Dragon" due to his dark complexion). Thus, the tea was named after him.
In reality, the name "Oolong" most likely derives from the tea leaves' appearance. After sun-drying, pan-firing, and roasting, the leaves turn dark black with twisted strands resembling fish (or dragons).When steeped in water, the leaves unfurl in curled, twisted patterns, their dark-blue hue resembling a black dragon entering the water. Hence the name. Whether named after a place or a tea variety, all teas processed using the same method are collectively called oolong tea. This includes the Oolong variety and other renowned varieties like Tieguanyin and Da Hongpao.As a renowned specialty tea in China, modern scientific research both domestically and internationally has confirmed that Oolong tea possesses not only the general health benefits of tea—such as invigorating the mind, alleviating fatigue, promoting saliva production, diuretic effects, fever reduction, heatstroke prevention, antibacterial and anti-inflammatory properties, dispelling cold, alleviating hangovers, detoxification, disease prevention, aiding digestion, reducing greasiness, weight loss, and body toning—but also exhibits distinctive effects in cancer prevention, lowering blood lipids, and anti-aging:
Cancer Prevention
On June 15, 1998, Associate Researcher Han Chi and her assistant Xu Yong from the Toxicology and Chemistry Laboratory of the Institute of Nutrition and Food Hygiene at the Chinese Academy of Preventive Medicine conducted animal studies on tea's anti-cancer effects.They fed five types of tea, including Anxi Tieguanyin, to rats while simultaneously administering synthetic methylchloroquinoline, a carcinogen with over 99.8% purity.
After three months, the esophageal cancer incidence rate in the tea-fed rats ranged from 42% to 67%, with an average of 2.2 to 3 tumors per affected rat. In contrast, the non-tea-fed rats showed a 90% incidence rate, averaging 5.2 tumors per affected rat. Among the five teas tested, Anxi Tieguanyin demonstrated the strongest anti-cancer effect.Simultaneously, they conducted another experiment using sodium nitrite and methyl carrageenan as carcinogenic precursors. Results showed that none of the rats in the tea-drinking group developed esophageal cancer, while the incidence rate in the non-tea-drinking group was 100%. This outcome demonstrates that tea can completely block the endogenous formation of nitrosamines within the body.
This concludes our exploration of the mysteries of oolong tea. We hope you now have a clearer understanding. Wishing you good health and joy in life.