Chinese "slimming" teas are believed to enhance the body's ability to resist digesting oils and animal fats. The active ingredient in Chinese slimming tea is tannin, an astringent-tasting antioxidant compound that builds complexes with a variety of starches, protein and cellulose -- a mix that inhibits absorbability. Though Chinese slimming teas alone will not decrease caloric intake, the blends are believed to enhance weight loss.
Oolong tea --- also called Wu-long tea --- is one of the three kinds of tea produced from the Camellia sinensis tea bush. Unlike green tea that is dried without oxidisation and black tea that is dried after oxidisation, oolong teas share some characteristics of both green and black teas because they are lightly oxidised. Oolongs are also rich in tannin. Grown in the Fuijan province of China and in various mountain regions of Taiwan, different kinds of oolong tea leaves can range from bright green to a lustre brown. Once brewed, fragrant oolong tea can also range in taste, including notes of floral, citrus and roasted sugar.
Caffeine-free and popular among dieters in the United Kingdom, Feiyan tea combines green tea leaves, lotus leaves, Cassia seed and si gua luo, an antioxidant herb. The name honours Empress Zhao Feiyan, wife of Emperor Cheng, who was known for her beauty. Green tea has less tannin than oolong tea; but Feiyan tea goes to work on both the circulatory and digestive systems to inhibit the body from digesting fats and oils. Both lotus leaf and si gua luo are thought to invigorate blood circulation, and Cassia seed works as a laxative. Once brewed, Feiyan tea combines bitter Lotus leaf, sweet si gua luo and cassia seeds that can be sweet, bitter or salty.
Named for the city in the southwestern Chinese province of Yunnan in which it is cultivated from a large-leaf tea bush, Pu-erh special tea shares some characteristics of both black and green teas but can be aged for many years as if it were a wine. Pu-erh tea leaves should not be stored near fragrant foods. With age, its earthen taste becomes milder. On average, the larger pu-erh tea leaves contain more tannin than smaller tea leaves. Unlike other tea leaves, pu-erh typically comes compressed into blocks. Harvesting and drinking Pu-erh special tea has been a tradition in China for thousands of years. Not only does it vitalise the body's metabolism, it is also believed to help counteract the effects of alcohol.