"Black Tea is made from leaf that has been fully oxidized, producing a hearty deep rich flavor in an amber colored liquor. It is the oxidation process, oxygen coming into contact with the enzymes in the tea leaf that creates black tea."
While China and Japan are responsible for the majority of green teas consumed throughout the world, black teas from India are the most widely consumed and also considered the finest. Also, unlike green teas, black teas are often drank with milk.
Studies have shown that people who regularly drink black tea may see benefits in diabetes, high cholesterol, kidney stones, and Parkinson's disease.