cooking canna oil? flat dangerous, not productive, not healthy especially if acetone or such is used for reduction and a dozen etc's.

outdoor reduction only when a breeze is present so the butane does not congregate using a 1" x 24" pyrex pipe with a coffee filter on one end and a rubber plug with a hole in it for injecting PURE butane in the other. butane will evaporate almost immediately with anything over around 55f. use 191 ethanol in a small amount to mix the very sticky stuff into a workable thick liqued. shake shold be groud in a coffee grinder; DO NOT PACK IT; just shake it down.

you will get 100% available, no danger except if you are mentally impared and decide to smoke while doing the process. (lol)

you will die if you use methanol; don't even think about it. Evergreen is a good brand of 191 but getting harder to obtain. it only takes about 1/2 oz of the Evergreen to mix up the sticky solution and it will evaporate when you leave the top off the container you store it in.