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'''Black tea''' describes the most popular variety of [[tea]] in the [[United States]]. It is made by deliberately exposing the leaves of ''Camellia sinensis'' to oxygen before preserving them by roasting, baking, or frying. This sustained oxidation produces leaves that are dark brown to in black in color, and a liquor that is red to golden. Black tea preserves its flavor longer than other teas and for this reason it has been the favorite tea of regions, such as [[Europe]] and [[North America]], which are far removed from the countries, such as [[India]] and [[China]], in which tea is cultivated. Unlike most tea varieties, black tea is always prepared with boiling water.