Jurokucha is a tea blend that was originally developed by Chanson Cosmetics in 1985 and was sold Japanese brewer and soft drinks company, Asahi as a bottled beverage in 1993. According to Chanson Cosmetics, the idea of Jurokucha is based on the philosophy of Kampo(Traditional Chinese medicine in Japan) and is marketed as a healthy drink.
In Japanese, "Juuroku" literally means "16" while "cha" means, "tea". The naming derives from the fact that the drink is brewed using 16 ingredients. The blend of ingredients change from time to time, and the ingredients inside the newest version(2015) are as follows:
Job's tears(hato mugi)
Barley
Habu
Brown rice
Germinated barley
Loquat leaves(biwa leaves)
Corn
Black Soybeans(Kuromame)
Chamecrista nomame
Germinated Brown Rice
Kelp
Shiitake mushrooms
Guava leaves
Mulberry leaves
Jujube
Young balrley leaves
Coca Cola Japan's "Sokenbicha", a blended tea drink similar to Jurokucha, was released following the success of Jurokucha.
Taste
The taste of the drink is much like barley tea but the added ingredients give the drink a distinct and sophisticated flavor. It is non-caffeinated and makes for a good drink on hot summers.
Reference
http://www.chanson.co.jp/product/16/16cha.html