How much caffeine is in oolong tea?
The caffeine levels are similar in all types of tea and are dependent on steeping time. When steeped for 5 minutes, tea has about 50-70 mg of caffeine per cup of tea. Oolong tea is usually steeped for a much shorter time (less than a minute) so there is significantly less caffeine. In addition, oolong tea leaves can be brewed multiple times, and each time the caffeine levels decrease by about 75%. By the fourth infusion there is almost no caffeine left, but a good quality oolong tea will still have plenty of flavor.
