I've made limoncello both with 80-proof (40% alcohol) and also with 96% alcohol,
after 2 weeks the lemon peels in the 96% had lost all color, oils and wax, they were crispy and had no color left, it was all in solution, so that's what i'd want
but if you only have 151 (still 25% water) you may do the extraction with another solvent, then reduce it out and re-disolve into the 151
the alternative would be drying the 151 with ceramic balls meant for this (think they only work with stuff nearer the azeotrope of 96%, not sure) EDIT:
methods of drying ethanol - reading this and other sources on homedistiller.org show it's possible to use corn grits, or using molecular sieve material to remove water from alcohol, but takes 10 grams for each milliliter of water (can be re-used). haven't found anyone to use this method on such low alcohol as 80 proof however.
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Vicki,
Water cure ABV to get rid of the "freeze-dried bong-water" taste & smell. (2 day soak- 1 gallon of water)
i think you benefit from decarb'ing the fresh herb but think i read extraction causes decarboxylation...?