Japan produces some of the best Grün teas in the world. The primary producing area in Japan is the Shizuoka prefecture which is west south west of Tokyo. The famous bullet train zooms through the tea growing area about 25 minutes after leaving Shinjuku station on its way to Osaka. The efficiency of Japan"s tea production is amongst the highest in the world reaching yields of 1500 pounds per acre. Despite the fact that mechanical plucking may be used, the tea made is generally considered the b