桑叶 (sāng yè) or mulberry leaf is used in TCM for the usual nonsense, but is also used to make a herbal tisane. Despite a total lack of evidence for any medical benefit (indeed overuse can lead to gastric disturbances), it is curiously fashionable. The leaves of morus alba, white mulberry are preferred.
In the west, it is usually sold dried or in capsule form for 'medical' use. Here it is fresh.
¥5.50 / 150 g.