Thanks RC, that helps a lot.
I've been reading through the
Great Gin Recipe Discussion thread where the Doc makes several appearances. It is interesting how the different botanicals come out during separate parts of the run.
It does makes sense to run a higher ABV through the oils as from what I have read the ethanol will infuse the botanicals oils a lot better than water will. So I assume the Doc has some sort of arrangement where the Carter Head is attached after the RC of a bubbler - I guess where some people might insert a gin caddy?
I'm not clear yet on how the oils are extracted from the botanicals and fall to the bottom of the oil reservoir for the vapour to pass through, but I'll keep researching. I'm sure the answer is there.
Cheers!