Cast iron box with wood chips. I just moved some of the bricks out of the way on one side. It wasn't a really grand attempt. It was on the cheap, like the rest of that grill. I think it was more a lesson in the fact that you can't do much more than straight grilling on the cheap.

BTW, when I mean on the cheap I mean CHEAP. This grill cost well under $100 on closeout one year at Wal-Mart as I recall. My dad found it, bought one for himself and one for me. It was mostly gone anyway. Everything but the tank went out with the trash late last year.