What is green tea Green tea is produced from exactly the same plant as black tea (Camellia Sinensis). It varies, nonetheless, in how the leaves are prepared and fermented, offering benefits not seen in tea that is black. Portions of the active compounds are destroyed in tea which is black, but remain active in the green form. These active constituents possess a major effect on body fat, accelerating both the loss of stored fat and bringing down body fat storage itself.