Black tea is a type of tea that is more oxidized than oolong, green, and white teas. In China it is also referred to as red tea. Black tea is generally stronger in flavor than the less oxidized teas.

Black teas are processed in either of two ways, CTC (Crush, Tear, Curl) or orthodox. The CTC method produces leaves of fanning or dust grades that are commonly used in tea bags but also produces higher (broken leaf) grades. This method is efficient and effective for producing a better quality product from medium and lower quality leaves of consistently dark color. Orthodox processing is done either by machines or by hand. Hand processing is used for high quality teas. While the methods employed in orthodox processing differ by tea type, this style of processing results in the high quality loose tea sought by many connoisseurs. The tea leaves are allowed to completely oxidize.
While green tea usually loses its flavor within a year, black tea retains its flavor for several years. For this reason, it has long been an article of trade, and compressed bricks of black tea even served as a form of de facto currency in Mongolia, Tibet and Siberia into the 19th century. Black tea accounts for over 90% of all tea sold in the West.
How to brew Black Tea
Brew temperature 90-95 °C
Standard 200 ml water with 4 g of tea
Brew times: 60-40-60-70-80-(+10) seconds