Take a quantity of grass and dampen it, place in a baggy or another socially acceptable container, and store it in a dark, dampish place for a couple of weeks (burying it also seems to work). The grass will develop a mold which tastes a bit harsh, a and burns a tiny bit funny, but does increase the potency.
haha anyone tried this? Might give it a go for a laugh unless someone warns me otherwise.
haha anyone tried this? Might give it a go for a laugh unless someone warns me otherwise.