Pu-erh tea

„Depending on the desired product and speed, from quickest and tightest to slowest and loosest, pressing can be done by a large heavy stone, carved into the shape of a short cylinder with a handle, simply weighs a bag of tea down onto a wooden board. The tension from the bag and the weight of the stone together give the tea its rounded and sometimes non-uniformed edge. Due to the manual labor involved, this method of pressing is often referred to as: "hand" or "stone-pressing", and is how many artisanal pu'er bǐng are still manufactured.“

„Pu'er; 普洱. Also Puerh, Pu - er etc. Pu'er is the modern pinyin spelling. The place name of the Old City of Pu'er through which pack horses transported the tea from Southern Yunnan. The names were recently changed; Pu'er is now Ning Er and nearby Simao has the adopted name of Pu'er. Locally, in spoken Chinese at least, Ning Er is still Pu'er. “