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Fwd: Gin - Vapour extraction Quantities

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  • waljaco
    Bombay Sapphire Gin uses a Carterhead Still, which is a type of reflux column - the vapor from this then goes into a tank (gin head) that resembles a doubler
    Message 1 of 1 , Aug 29 3:18 PM
      Bombay Sapphire Gin uses a Carterhead Still, which is a type of reflux
      column - the vapor from this then goes into a tank (gin head) that
      resembles a 'doubler' on a moonshine pot still. This tank contains
      botanicals on a sieve type tray. The flavor of the gin is apparently
      more subtle than other gins using soaking (24 hrs) and then
      redistilling. Some Dutch companies use several redistillations using
      different botanicals each time as different botanicals release their
      oils at different times.
      Their recipes are now formulated on the basis of essential oil content
      as botanicals vary in this depending on geography and climatic
      That's all I have picked up in the literature around.

      --- In Distillers@y..., Robert Stam <Robert.Stam@b...> wrote:
      Hi Noel,

      Yes I agree that the taste is probably quite subjective, you either
      like it
      or you don't, and you can't please everyone. Also the freshness of the
      botanicals would be an issue.

      I was going to 'redistill' a wash of ethanol @ 96.6%abv diluted with
      filtered water down to say 45% abv. The temperature changes will
      still be a
      problem as the ethanol/water mix changes, but perhaps I can take cuts
      the output and compare later.

      I'll give it a go using the infusion mixture from the Archives Msg

      Waljaco's comment:
      Quantities intrigue me also.
      Your message 2132 is the most authoratative on botanical
      which would be 2 parts juniper, 1 part coriander, 1/4 part
      bark and angelica root, and 1/40 part for the other
      Multiply by 10g to get quantity to flavor 1 litre of alcohol
      as it appears about 40g of botanicals is sufficient. i.e. you
      macerate the 40g of botanicals in 1 litre alcohol 45%abv, and
      redistill. Dilute to 45%abv again. 45%abv appears ideal to
      hold the
      volatile essential oils.

      So for steeping in 4 litres of 45% abv I would use:

      80g Juniper berries, bruised
      40g Coriander seeds
      5g Cassia bark
      5g Angelica Root
      1g Lemon peel

      I wonder if Waljaco or anyone else would care to comment on the
      required for suspending the botanicals in the column and just heating
      the 4
      litres of 45%abv in the boiler? Since the botanicals are not steeped
      subjected to heat and water/ethanol vapour would the quantities need
      to be
      considerably larger, or are the majority of volatiles extracted quite
      quickly and early on? Also, as the re-distillation progresses, the
      proportion of ethanol in the vapour would start of rich and descend
      down to
      lean, extracting, I suppose a different range of volatiles from the

      Cheers, Rob

      -----Original Message-----
      From: noelwatson [mailto:noelwatson@u...]
      Sent: 29 August 2002 23:44
      To: Robert Stam
      Subject: Re: [Distillers] Corriander in Gin - seeds or root

      G'day Roger,
      The quest seems to be for the ultimate Gin.
      Wasn't really impressed with
      After the buggarising around with botanicals and finally getting the
      right, (That Me & the Missus Like .....don't you hate that??) I
      figured that
      I can't source fresh Juniper berries... so I'll take what I can get.
      Next...Cardamom pods.... how stale are they??????
      Coriander seed or roots....what's the use by date??????
      Orris root ....has been sitting in some hippie crafties draw to make
      pouri smell nice for a long time. OK ...add this all together and
      we'll make
      a comparative Gin to the commercial brews. Oh dear... I think not.
      The "hang 'em in the tower" approach was so disappointing. As the
      distillation temp changed ..so did the Gin taste. I think the same may
      true of a GIN HEAD still in small quantities. We're trying, on a small
      to outdo a commercial business.... So therefore, I took a leaf out of
      old farts' book.....make the best ethanol that you can...and then make
      flavouring to suit what you want to drink..easy peasy!
      I'd love to make a gin head still, but unless I wan't to make
      Coriander Flavoured Schnapps....(NOT)...that's a lot of equipment
      slanted in
      the one direction!!
      I now have 6 or 7 flavouring stills ......to let flavouring fantasy
      where it may...and then try and make large quantities of the purest
      that I can....add a flavouring....gives me a chance to get it
      Sorry, I'm raving on a bit, but I think the closest taste is still
      pure 40%
      alcohol...followed up (or mixed) with the best essence you can
      that's fun. Gilbeys Etc., have been selling us bad grog for
      years...we can
      make purer grog...lets flavour it commensurately or better.
      Sorry for the big rave.. ( and didn't you like the quote ..."to let
      flavouring fantasy fly where it may") God..couldn't a bloke get hung
      that one????????
      Noel Watson
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