Kōcha or Wakōcha means "black tea“ or, specifically, "Japanese black tea“. The most tea plant varieties in Japan are used to produce green tea, so black tea is considered rare and uncommon. It is produced in very small volumes by enthusiastic private estates, and is not really reflected in the overall statistics. Japanese black tea undergoes a lighter fermentation than comparable black teas in India or China. It is valued for a beautiful reddish-brown cup, low astringency and it's warming, sweet, round and fruity taste.