thats what I posted. make a series of cuts from top to near bottom, stuff a gas infuzed hunk of paper or what have you down the center and light it.
I ended up making that one and giving it to my helper, he burned it this summer when he went camping and said it worked fine.
I think it was the Brits that showed it here first, from an outdoor jobsite they were cooking lunch up on one.
two more pics I found on my hard drive, these arent ones I made.