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
Kangra tea Kangra tea Kangra tea is a tea from the Kangra district in Himachal Pradesh, India. Both black tea and green tea have been produced in the Kangra Valley since the mid-19th century. Kangra tea was given the Geographical Indication status in 2005. Tea was first grown in the Kangra region in the mid-19th century. After a feasibility survey in 1848 showed the area of being suitable for tea plantation, a Chinese variety of "Camellia sinensis" was planted across the region. The production turned out to be successful in Palampur and Dharamshala, despite failing in other locations. By the 1880s, the