Kintra Formosan Green Tea Loose Leaf is free from tannin bitterness. 98% Caffeine Free. 100% Natural. Our unique Formosan Green Tea is grown in pristine mountains of Asia where cool, clear air helps produce the world’s finest teas. The art of tea growing has been perfected over centuries in this region. Formosan Green Tea is a premium product because it is rich in antioxidants which help protect your immune system, and free from tannin bitterness which is common to many teas. Our tea is also superior to others because of its much loved smooth, fuller flavour and distinct colour.