What Is Green Tea
Did you know that all true teas (green, white, oolong, black, and dark) are made from the leaves of the Camellia sinensis plant? There is no black tea plant or green tea plant, though often specific varietals of C. sinensis are used to make specific kinds of tea.
It's similar to wine. All wines comes from grapes, but different wines use different varietals of grapes and different methods of production. This is how tea is too.
So what makes green tea different from other teas? The processing.
To be classified as a green tea, the freshly plucked leaves are left unoxidized and undergo a process called "kill-green." If the leaves were oxidized, they would turn brown similar to how apples turn brown when cut and left in the open. To prevent this in tea, the enzymes in the leaves are broken down which leaves the leaves, well, green!
There are two main “kill-green” methods, and this is where the main difference (besides growing region) between Japanese green tea and green teas from other countries comes in.