HERB OF LONGEVITY: Kazu's Gynostemma (JiaoguLan) Tea is composed purely of gynostemma tea leaves, which is often called "Miracle Grass" for its ability to heal the body in many ways. The Chinese and Japanese People have been drinking this tea for thousands of years as an antioxidant, stress reliever and detoxification herb. For best brewing, bring fresh water to a boil and allow to cool slightly. Pour over tea and steep for 2 - 3 minutes.