has a nice description of the popular summertime beverage:  http://en.wikipedia.org/wiki/Suanmeitang " Suanmeitang  is made by first soaking sour plums in water, then adding  haw ,  liquorice  root, [ 4 ]  and sweet  osmanthus  and boiling them together.  Rose  blossoms may also be added. [ 2 ] [ 9 ]  After the