Decaffeination this trait could be bred into other coffee plants by crossing them with "C. charrieriana", or an equivalent effect could be achieved by knocking out the gene for caffeine synthase in normal coffee plants. Tea may also be decaffeinated, usually by using processes analogous to the direct method or the CO process, as described above. The process of oxidizing tea leaves to create black tea ("red" in Chinese tea culture) or oolong tea leaves from green leaves does not affect the amount of caffeine in the tea, though tea-plant subspecies (i.e., "Camellia sinensis sinensis" vs. "Camellia sinensis assamica") may differ
Indian tea culture tribe, inhabitants of the regions where the "Camellia sinensis" plant grew native, have been consuming tea since the 12th century. It is also possible that tea may have been used under another name. Frederick R. Dannaway, in the essay “Tea As Soma”, argues that tea was perhaps better known as “Soma” in Indian mythology. The tea plant is native to East Asia and the Indian subcontinent, but the origins and history of tea are not precise. Many of the origin myths for tea are found in Chinese mythology, and the first verifiable records for tea consumption also point towards China.