Gyokuro, Japan's top grade of Japanese Green Tea, is not normally found in homes in Japan. It provides an excellent balance of quality and value. Gyokuro tea bushes are carefully grown in the shade for about three weeks prior to harvesting in order to protect them from sunlight. In so doing, the L-Theanine (amino acid) content of the leaf increases while the tannin does not. Gyokuro has a rich green color, a distinguished aroma and a sweet taste.