Macha is the light green fine-ground “tea ceremony” tea. I had it in Japan, both as tea and possibly the best flavouring for ice cream ever. It’s good. I’ve read conflicting reports of its caffeine content; some people say it’s very low in caffeine, but I always got a monstrous buzz from it.
Just to make sure I’m getting enough of The World’s Favourite Alkaloid™, I also got some green Sumatran coffee beans and a grinder while I was at the Carrot. Local company Merchants of Green Coffee deserve the credit/blame.