Black tea is a type of tea that is made from tea leaves that have been highly oxidized. The level of oxidation influence the taste of the teas, for black teas are known to have more character which results in stronger flavor than other types of teas.
In Chinese and the languages of neighboring countries, black tea is known as “red tea” a description of the color of the liquid aka liquor; the Western term “black tea” refers to the color of the dried oxidized leaves.
It is the oxidation process, oxygen coming into contact with the enzymes in the tea leaf, that creates black tea. Black teas have a fuller and richer flavor than unprocessed teas.