[painter]

They use the sulfur from match heads in some way.

Most likely battery acid,as in car battery.That is what I have heard meth cookers use.

[little jeremiah]

I was on a grand jury for two months a couple of years ago. They told us all about meth manufacture and the stuff that's used. Matches are a biggie. I can't remember all the other stuff, it's like a toxic mess that no sane person would ever get near.