Altering brew length.

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Robdog

Altering brew length.

Post by Robdog » Thu Dec 04, 2008 4:23 pm

This may sound like a stupid question but i just want to check my calculations.

Ive got a recipe for a 25ltr brew length. Now if i want to knock this down to 23 ltrs do i just divide all the weight in the original recipe by 25 then times that by 23? This makes sense to me but thought id double check.

Also would this effect the estimated gravity at all? I think for the 25 ltr recipe gravity shuld be aboue 1053 so should i still expect this doing it at 23ltrs? Again i dont think it will alter it but just want to check.

Had to delay my first AG recipe for a week or so as ive been flued up big time but hopefully start it next week, just need to get a 8-15mm adapter for my chiller and some hose pipe.

quiff

Re: Altering brew length.

Post by quiff » Thu Dec 04, 2008 6:30 pm

Hi Robdog,
Is it a counterflow chiller you have made?

Robdog

Re: Altering brew length.

Post by Robdog » Thu Dec 04, 2008 6:50 pm

quiff wrote:Hi Robdog,
Is it a counterflow chiller you have made?

No mate its an immersion chiller. I need the adapter on bth inlet and outlet as ill be putting the whole thing in a 10 gallon boiler so i need a nice tight fit plus jubalee clips to keep the hose in place because as it will be in boiling water it will get very soft.

boingy

Re: Altering brew length.

Post by boingy » Thu Dec 04, 2008 7:30 pm

Brewing is not a very precise art. Chris is correct that you just ratio the ingredients up or down but I find that you can pretty much interchange 25l and 23l recipes. I may adjust the main malt ingredient up or down by "a handful" but other than that I tend to use the recipe as presented. In reality, hops and malt quality can vary quite widely and so can the ability of the brewer. I guess it depends how scientific you want to be!

Parva

Re: Altering brew length.

Post by Parva » Fri Dec 05, 2008 1:44 am

boingy wrote:Brewing is not a very precise art. Chris is correct that you just ratio the ingredients up or down but I find that you can pretty much interchange 25l and 23l recipes. I may adjust the main malt ingredient up or down by "a handful" but other than that I tend to use the recipe as presented. In reality, hops and malt quality can vary quite widely and so can the ability of the brewer. I guess it depends how scientific you want to be!
I'd agree totally with that. All of my recipes have been dreampt up and made and come good, my latest Summer Lightening clone has had a few tweaks here and there too. For the sake of a couple of litres I wouldn't be thinking of changing the recipe unless I thought I was going to come way under the expected OG.

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