this stuff is quite good. The bag I got seems to be 100% red oak. Imparts a very nice, full flavor to the meat, lasts a long time, and hotter than hell.
A drawback is, since it's not briquettes, the chunk sizes range from quite big to crumb small, but still worth the bother.
Got mine at Wally's but Ace hardware and other places carry it.
If you get some, please do not use lighter fluid to start it. That would be sacrilegious.
a charcoal chimney works best