Pu-erh tea shapes

„Pu-erh shape - Bing, Beeng, Cake, or Disc - A round, flat, disc or puck-shaped tea, the size ranges from as small as 100g to as large as 5 kg or more, with 357g, 400g, and 500g being the most common. Depending on the pressing method, the edge of the disk can be rounded or perpendicular. It is also commonly known as Qīzí bǐngchá (七子餅茶, literally "seven units cake tea") because seven of the bing are packaged together at a time for sale or transport.“

„The best test is if, when drinking tea, there are any of prickling, tingling, numbing sensations on or near the tip of the tongue. If this is so one can be reasonably certain that agro-chemicals are present.“