I have a question referring extractions:
Are extracts ethereal oils ? Why is it not possible to extract tobacco flavour oils only with water ? Perhaps i am stupid but i dont understand this.
It can be done using distilled water as long as you have a method create a vacuum in the container, Mold/ fermentation may occur when any part of your equipment isn't sterile, or air is introduced to the mixture.
Fermenting vegetables ie Kim chi, cabbage is shredded/cut, salted and packed with water to the top whole cabbage leaves are added on top, and virtually all air is compressed out before sealing the jar.
Water extraction should work. But mold will be a constant problem. Ethanol and PG keep the mold out. Water invites it in.
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As I've previously posted, in lieu of water, I use Potato Vodka as my steep medium, once the extraction is completed, in 60-90 days, I evaporate the alcohol ~70-80% using low heat, 130-140F, then add a 50/50 mix of PG/VG as a preservative... 50 ml of NET extract will have ~25ml of the PG/VG added, absolutely no moldy extracts have resulted, whereas 1 of ~10 Distilled Water extracts spoiled, and why I made the switch to Potato Vodka.