It is gotten from leaves of Matcha green tea plant that is mostly grown in Japan. (slowfoodnation.org)
On the off chance you're not familiar with matcha, it's a fine green powder that's ground from the highest quality green tea plants and contains a whopping 10x the antioxidant benefits of regular green tea. (domesticate-me.com)
Matcha Green Tea and regular green tea are made from the same plant but matcha preparation involves covering green tea plants with shade cloths before they're harvested. (thehealthytart.com)