perhaps try adding some salt to help the emulsion break (makes the water more polar), or add more lye, that works too.
Also, consider doing longer pulls in a hot water bath, stirring/emulsifying often. Even if you get semi dirty spice, you can clean it up w/ another freeze precip. I find yields are a bit better with longer heated pulls using naptha/heptane.
The final thing i could recommend is to do a few days acidic water soak (fumaric, vinegar, etc) before cooking your bark. I really don't even cook my bark, just heat it up in a narrow container with distilled water and vinegar in the microwave until almost boiling. Let it sit, shake often, and pour off the already decanted and filtered liquid 2 days later, leaving the bark for another cook/soak. It takes about a week, but its easy as pie, almost no filtering, and i've gotten excellent yeilds using this method, 2%+ on some extractions. Pulling full spectrum with limo though.
Still pretty decent results for a 2nd extraction, and that spice looks very nice
.
Good luck-
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