Halving a Recipe

Discussion in 'Beginners Brewing Forum' started by BoulterBrewer, Sep 13, 2018.

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  1. BoulterBrewer

    BoulterBrewer New Member

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    I'm looking to halve a recipe from a book that i've got. Essentially I don't have the capacity to do a full batch and just want to squeeze a half-batch in.

    I'm just trying to figure out how to correctly halve everything? I'm assuming that grist and hops will all get halved, but the water boil-off rate will remain the same, so I should halve the volume going into my fermenter, but add on the same boil-off vol?

    FWIW - I'm in the UK brewing BIAB in a 33L pot. The original recipe was 20L - I used 22L pre-boil vol. Boil time is 60min. so I'm guessing i'd need a pre-boil volume of 12L?

    Thanks all
     
  2. okoncentrerad

    okoncentrerad Active Member

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    Use the recipe builder here in brewers friend. Enter the original recipe and then use the feature "scale recipe ". It works great
     
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  3. Trialben

    Trialben Well-Known Member

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    Your boil off will be the same- less grain absobtion as above plug it into recipie builder and adjust from there.
     
  4. BoulterBrewer

    BoulterBrewer New Member

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    Yeah, I plugged it through the recipe builder, but i'm still getting to grips with it and I haven't got my equipment profile configured properly yet.

    Thanks for all the advice though.
     

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