What is Pu-erh? Pu-erh is the tea that gets better with age. Like wine, pu-erh is fermented in a controlled setting to give it an unparalleled depth and character. Chinese tea drinkers have known of the health benefits of pu-erh tea for centuries, and recent scientific research have bolstered many of these traditional claims. Pu-erh tea is effective in lowering blood cholesterol, reducing high blood pressure, and preventing intestinal infection.