Next time only do it for a couple of minutes. You pick up too much chlorophyll and unwanted stuff for long soaks like that. You can put it outside in the sun for a little bit while covered (like in a sealed jar before evaporation) to get maybe rid of the green color which will concentrate as your liquid evaporates, probably turning black.
Excerpt from:
http://skunkpharmresearch.com/qwet-extraction/
Quick Wash Ethanol, also know as QWET is one of the techniques commonly employed to extract oil from cannabis.
Here is skunk pharm’s QWET formula to produce an absolute using a 3 minute quick wash.
As most of our extracted oil goes into oral meds, we also decarboxylate ours. This process is based on the 252F curve shown in the attached graph.
The first question is why use a quick wash technique to extract the resins, instead of long soaks to extract as much resin as possible, or just boiling the material in alcohol to get the greatest amount of extracted material?
The answer to that is that because alcohol is a polar solvent that is soluble in water, the latter two techniques also extract the water solubles like chlorophyll and plant alkaloids, as well as the plant waxes and vegetable oil.
Even quick wash does to a lesser degree, but the added steps that we include here minimize pickup even further and we take additional steps to remove the impurities that we do pick up.
Hope that helps. Winterization information is on the website which might help. It will probably still vape as is, but it will likely gum up your coil in the atomizer pretty quickly and may taste and smell planty. Winterization removes some taste though.
