When talking about tea from a chemistry perspective, it would be a crime not to mention GABA teas, which are becoming increasingly popular. GABA, or gamma-aminobutyric acid, serves as the main inhibitory neurotransmitter in the nervous system.
Last week many people were drinking Taiwanese oolong Dong Fang Mei Ren, in the production of which leafhoppers play an important role, so it would be useful to talk about them.
Mechanization of sencha production in Japan began in the 1920s. By the 1960s, systems streamlining tea production were already quite commonly used. After initial preparation of the leaves, such systems allow for accelerating rolling, steaming, and drying of tea, among other processes.