Only true tea can be decaffeinated, because it’s the only tea with any caffeine to remove in the first place. Green tea, black tea, and white tea are all leaves of the same plant—Camellia sinensis.
A freshly brewed mug of tea is the product of many serendipities: ancient human ingenuity, meticulous harvesting, global trade and a whole lot of chemistry. In her new book "Steeped: The Chemistry of ...
Medically reviewed by Aviv Joshua, MS, RDN Key Takeaways An 8-ounce cup of green tea has about 29 milligrams of caffeine.Brewing green tea longer or with hotter water increases its caffeine content.If ...