Hmm…the toss up between freeze drying & snap drying with DHs for the purpose of aroma preservation. Volatile profiles in weed will be altered differently in both processes. Biochemically one would expect monoterpenes and oxygenated mono and sesquiterpenes
terpenes would generally preserve better through out the air-drying process. Most other sesquiterpenes, ethers, phenylpropanoids etc would be better preserved by freeze drying. Tens of thousands of these compounds are found in biology, of which an almost infinite number of combinations could potentially be arranged to produce an almost infinite number of unique aromas. So for the purposes of preserving aroma I doubt there will ever be a ‘one rule fits all’. Bubblegum that has been freeze dried, will resemble but inevitably smell slightly different to, bubblegum that has been snap dried, and again the case would be for slow cured. It’s up to the subjectee which aroma is preferred and just to point out its aroma, not taste - as many of you would know, like coffee and tea, weed tastes more or less the same when you have a cold.