Puer (or pu'erh) is a type of Chinese tea produced in Yunnan province. Pu'er tea gets its name from the city of Pu'er, which was the center of trade for this tea. Pu-erh differs from other types of tea in its production process and fermentation methods.
There are two main types of pu'er: green pu'er and black pu'er. Green pu-erh undergoes shallow fermentation, which preserves its green color and fresh taste. Black pu-erh undergoes longer fermentation, which gives it a dark color, rich flavor and aroma from the earth or wood.
Pu-erh is famous for its special properties, such as its ability to improve digestion and is considered beneficial to health. It is also often associated with tea culture and tea ceremonies in China. Depending on its age, pu-erh can take on a distinct flavor and aroma over time, and some consider older varieties of pu-erh to be especially valuable.