Black tea is plucked from a plant called Camellia Sinesis. In the production of black tea, the leaves are first spread out on racks and blown with air to remove about a third of their moisture and make them pliable. Then they are rolled around to break their cell walls and release the sugars necessary for fermentation. To promote fermentation they are kept in a highly humid environment, which turns the leaves dark and develops black tea's strong flavor. Finally, the leaves are dried and shipped off to all corners of the globe. It can give dark color when used as beverage.