Jasmine Green Tea is one of the most popular teas in China. Jasmine is picked in the heat of the day, when the flowers are closed tight. When Jasmine blossoms are blended with the green tea leaves, they create this fragrant and refreshing tea. It also offers a large number of health benefits, with a history of use dating back 4,000 years. A typical cup of green tea has about 20-30mg of caffeine, and cup of coffee ranges from 100-180mg.