Kuding Bitter Green Tea ku ding tea
Ku Ding(pinyin: kǔdīng chá; literally "bitter nail/spike tea") or Kuding cha is a particularly bitter-tasting tisane which due to their similarities in appearance is derived from several plant species. Two most common plants used to make Ku Ding tea, being the wax species Ligustrum robustum. and the holly species Ilex kudingcha plant, the former being more commonly grown in Sichuan and Japan while the latter is most commonly grown and used in the rest of . The traditional Chinese medicinal properties associated with Ku Ding include its ability to disperse wind-heat, clear the head and the eyes, and resolve toxin, thus being used for common cold, rhinitis, itching eyes, red eyes, and headache. It is also said to calm fidgets and alleviate thirst, especially when one is suffering from a disease that causes fever or severe diarrhea. It transforms phlegm and alleviates coughing, thus used in treating bronchitis. Finally, it is said to invigorate digestion and improve mental focus and memory. Modern research suggests that the , derived from either Ilex or Ligustrum, promotes blood circulation, lowers blood pressure, and lowers blood lipids, including cholesterol. It has the reputation of preventing deterioration of the heart and brain function and maintaining proper body weight. It has also be found that Ku Ding tea made from L. robustum has similar anti-oxidative effects to tea in addition to additional anti-inflammatory properties.