Herbal tea Herbal tea Herbal teas — less commonly called tisanes (UK and US , US also ) — are beverages made from the infusion or decoction of herbs, spices, or other plant material in hot water. They do not usually contain caffeine. Herbal teas should not be confused with true teas (e.g., black, green, white, yellow, oolong), which are prepared from the cured leaves of the tea plant, "Camellia sinensis"), nor with decaffeinated tea, in which the caffeine has been removed. Like beverages made from true teas, herbal teas can be served hot or cold. Some feel that the term "tisane"
Black tea tea is a blend of two or more black teas of the leaves and buds of "Camellia sinensis" that contain at least 30 percent water-soluble extractive, with 4 to 7 percent ash. Unblended black tea contains at least 25 percent water-soluble extractive, with 4 to 7 percent ash. Packaging of black tea is based on the packaging guidelines from the country of origin. Generally, unblended black teas are named after the region in which they are produced. Often, different regions are known for producing teas with characteristic flavors. Black tea is often blended and mixed with various other plants in