Black tea is nothing more than the leaves of the camellia sinensis that have been processed a certain way. It is one of the four types of teas ( white , green , oolong , and black).

Black teas are the most consumed of the four types of teas. They are the highest in caffeine, but still have antioxidant properties, just not quite as much as others.
 
Orthodox black tea

• CTC black tea, PD grade.   
• CTC black tea, BP1 grade. 
• CTC black tea, PF1 grade.