Raw Puerh Tea Cake Net Weight: 357g Type: Raw/Uncooked/Sheng Vintage: 2007 Year, Factory: Yunnan Menghai ban zhang tea factory About the Pu'er tea: The Chinese tea history of Pu'er tea is fascinating. Pu'er tea is one of the oldest type of tea in China with a rich history of over 1700 years that can be traced back to the Eastern Han Dynasty (25-220 AD). During it's height of popularity Pu'r tea was freely traded and even used as money for the bartering of goods. Premium Pu'er tea was offered as a tribute tea to the Emperor of China and to this day Pu'er tea remains a highly valuable commodity. Pu-erh tea is revered in China as a traditional medicinal tea with many health benefits. Unlike other teas that should ideally be consumed shortly after production, pu-erh can be drunk immediately or aged for many years; pu-erh teas are often now classified by year and region of production much like wine vintages.. Some studies have shown that pu-erh may lower cholesterol, lower blood pressure and increase metabolism. Pu-erh is occasionally touted as a 'diet tea,' but like all teas, I don't recommend consuming it as a magical weight loss tool, but rather as an enjoyable part of a healthy diet.