I thought that butane to rapid cannabinoic acid precipitation on pour out, and subsequent centrifugation (sauce) and crystalline recovery , separates the terpenes at cool temperatures, purifies the cannabinoic acids to 99+ % , Then decarb the cannabinoic acid, and reintroduce the terpenes in their full glory was the way to go.?
The rosin guys, selectively remove certain terpenes by controlled temp and pressing. They seem to produce some of the finest “vape’ in the world? And even they debate whether to use a “freeze dry step” not unlike that described by the quote above.
The whole story of Vitamin E and Vaping sickness that appeared in 2019 was some part of (“third party”) psyop-cog-dissonance program to cover for early release of Covid in USA. You don’t want to know. So who really cares about low levels of vitamin E? Have you heard of anyone dying of “vape disease” lately?