Green tea is made from the Camellia sinensis plant, the same plant from which all types of tea are made.  Produced primarily in China and Japan, tea leaves are picked, dried, and heat-treated to stop fermentation of the loose leaf green tea.  The heat treatment for Chinese green tea consists of roasting the tea leaves in a hot roasting pan whereas Japanese green tea is steamed. After moisture is removed through the heat treatment, the tea leaves are typically rolled and dried again before ready for use.  Chinese green tea produces a yellowish green liquor and toasted taste while Japanese green tea is dark green in color and has a grassy taste.  Loose green tea typically has 5-10% of the caffeine in an average cup of coffee.