no worries. the inert gas is just there to stop things reacting.
boiling the ethanol off at atmosphere would boil off many of the terpenes. using a fractional distillation setup to separate by boiling point is an option, except that high heat and O2 will wreck many of the delicate compounds we’re after.
performing the distillation under vacuum, and backfilling with an inert gas to lower those temps, and remove O2 from the equation might make it possible to remove the ethanol selectively (add back anything that boils off before the etoh).
the other option is to turn a great solvent in to one that is less great. by adding stuff.
adding liqCO2 is probably the most tunable solution, and if direct distillation from biomass isn’t a better route, I imagine CXE (CO2 expanded ethanol) will eventually be our go to. @Plant2pipe?
Adding water makes you a loucher 