Pu-erh tea shapes

„Pu-erh shape - Mushroom - Literally meaning "tight tea," the tea is shaped much like túocha, but with a stem rather than a convex hollow. This makes them quite similar in form to a mushroom. Pu'er tea of this shape is generally produced for Tibetan consumption, and is usually 250g or 300g.“

„Astringency
Astringency invariably accompanies bitterness. In some Puer the astringency is more pronounced, the bitterness slightly weaker. A benefit of astringency is that it can help promote salivation. If this is felt on the underside of the the tongue it is a further mark of good tea.“