This is a great way to make use of residue left on Volcano vaporiser bags. For years I just threw them away once they were a few months old, but a while back I read some forum posts about using this trick, and I think even Dopefiend mentioned it on some of his podcasts. First things first, this isn’t just a cute way to get a little more high, but something which provides a quite staggering stone, which comes on quickly, lasts for hours, and will have you remembering the good old days of being absolutely zonked.
It’s a really simple process, thanks to the nature of the Volcano bag material. To give you some rough guidelines as to strength, a given bag I’ve used might have been in action for 2-3 months, with around 0.3g of weed put through it each day. At this level of residue I’ve managed to get three experienced users very, very stoned, using just a litre of chocolate milk added to the bag. It could have done the trick for six or more people, so don’t underestimate the potency.