Black teas are made from tea leaves that have been quickly and heavily oxidized. This gives the leaf and liquor a dark appearance and significantly changes the aroma and flavor - most notably in the strong body of breakfast teas. Chinese gongfu black teas are less concerned with strength and focus on more subtle characteristics.
Anhui Province is the home of Qimen tea (often spelled “Keemun”). Qimen teas have a dark, chocolate, earthy characteristic with a thick, textured body. The smaller leaf varieties are great as breakfast teas and the larger leaf gongfu styles can offer softer and more nuanced features.
