I've been trying to find the exact origin of the traditional coffee cupping online but haven't found details. When Trish R. allude to the "Brazilian cupping" on an earlier coffeed discussion it piqued my curiosity.
Thanks!
The following links provided good information on cupping without going into too much detail about its history.
http://en.wikipedia.org/wiki/Coffee_cupping
http://www.ineedcoffee.com/04/cupping/
http://www.coffeeresearch.org/coffee/cupping.htm
