Was having a look around on E2 just now, and surprise surprise, was looking at nodes related to shisha, and found this one. Haven't really heard of this before so I thought I'd ask you guys. Has anyone tried this, or even heard of it before?
The Fabled Syrian Method! Take a piece of tin foil roughly two and a half times the diameter of the bowl of the head, and place the tin foil inside the bowl, smoothing it down so that it is flush to the side, then poke holes in it with a pin where there are holes in the bottom of the head. From this point onwards, you have to be careful not to disturb the foil; otherwise you may end up covering over the holes, which would be thoroughly unpleasant. The reason for this is that it reflects the heat all the way around the tobacco, giving it a more even cook. This ensures a much better flavour, although it does also mean that the tobacco cooks slightly quicker.