Pu-Erh is a fermented tea historically pan-fired, rolled, and sun-dried and then allowed to mature in warm, humid conditions for up to 50 years. More modern techniques developed a faster fermentation process using an ancient Pu-Erh bacteria culture. The flavor is earthy and woody, smooth and sweet. Pu-erh tea is reputed to have extraordinary health benefits, including lowering cholesterol and reducing body weight. Pu-Erh tea contains mild to moderate amounts of caffeine.