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Cake day: September 17th, 2023

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  • I guess it depends on what you are trying to extract from what :) For smells and taste I like cold extractions best.

    Didnt say anything about dry ice, but that would certainly be useful to quick freeze the plant material and crush it, more surface area is always good. I usually keep the ethanol around 18f, it still works as a solvent and you can filter out any excess water crystals when you are done if everything is kept below 30.

    This method works well for cannabinoid extraction, which is what we were often working with, just fyi




  • Cold fractionation with polar solvents is the best way to prevent degradation of the desirable compounds… IMHO Heat degrades and destroys many of the flavonoids and terpenes that you’d want from an herbal extraction.

    Surprised with your background that you never needed that method, but we have found it to be useful for NMR and mass spec work.


  • A few months? You’ll get plenty of chlorophyll and other undesirables pulled that way. If you just want the flavor and essential oil you can freeze your plant material and the everclear, combine while still as cold as possible, shake for a few minutes… Maybe try a little bit and see if that might save you some time and give a better tasting extraction.

    95% ethanol is pleanty strong enough for a quick extraction imho