This tea is a unique green tea. Formosa Oolong Tea is oxidized anywhere between green (no oxidation) to black (full oxidation). Oxidation occurs when the tea is left out, similar to when an apple starts to brown once it's cut open. Our Formosa Oolong Tea is a medium grade and is typically served in Chinese restaurants. Fun Fact: Taiwan was formerly known as Formosa. Green tea naturally contains caffeine. No additional caffeine has been added.
P.S. Make sure to add a tea infuser to your cart -- they're kind of important, lol.