Often referred to as “twig tea” on this side of the Pacific Rim, Kukicha is a Japanese tea made from the roasted twigs of Camellia sinensis. It is my everday tea, and probably my second favorite drink (behind water). I can’t comment on the purported health benefits, but I find the nutty, earthy taste to be enjoyable, and I appreciate that it is very low in caffeine.
I also regularly enjoy green tea, but green tea is the only source of caffeine in my life. This makes it a drink that needs some thought as to total consumption quantity and scheduling (caffeine in the morning or evening is the antithesis of optimizing for sleep). Kukicha I can enjoy anytime, including shortly before bed.
I was first introduced to Kukicha years ago by Vavrek, who I assume found it through macrobiotics. Outside of that community, Kukicha hasn’t seemed to have made significant inroads in the West. I rarely see it in stores. As a result I usually purchase mine from Eden Foods (along with the occasional umeboshi – though that I can also resupply that by pedaling over to Japantown), but I’ve not performed a survey to see if there are better sources available.