Promash

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RabMaxwell

Promash

Post by RabMaxwell » Sun Aug 26, 2007 9:06 pm

I have been having a look at promash & just noticed that it isn't registering any IBUs at 10 minutes boil or below even with large quantities. Is there something not right with the settings surely this cannot be right i am positive it used to. Cheers
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oblivious

Post by oblivious » Mon Aug 27, 2007 7:29 am

Its works for me, but the conversation rate is small for 10 minutes addition

1oz, 25 grams at 10 minutes gave me 3.67 IBU’s
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David Edge

Post by David Edge » Mon Aug 27, 2007 7:49 am

Rab
Which IBU formula are you using? (Not that it will make a lot of difference.)

Perhaps it's the influence of the Electric Brae?
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mixbrewery
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Post by mixbrewery » Mon Aug 27, 2007 11:53 am

My Styrian Stunner recipe is adjusting fine
Hops @ 3% AA Original IBU 25.6
Adding an extra 20gr to existing hop bill with 5 min boil increases IBU to 26.2

I tested with as the base hop BU was low and and wanted to see if the total IBU did change.
Check out the beers we have for sale @ Mix Brewery
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RabMaxwell

Post by RabMaxwell » Mon Aug 27, 2007 1:11 pm

I had to format my computer a few months ago & lost my Promash . I have figured out what's been happening when i reinstalled promash it's been set at Garetz instead of Rager apparently Garetz is the only setting that doesn't account for IBUs below 11 minutes surely Garetz is wrong. :shock: :shock:
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David Edge

Post by David Edge » Mon Aug 27, 2007 2:22 pm

Surely Garetz is wrong.
They're all wrong.

The only way to measure IBUs is to analyse the finished beer. Garetz, Rager and Tinseth all attempt to fit a selection of real-life data with various curve fits, and then extrapolate for conditions like OG.

None of them allow for IBU extraction after the end of the boil, during a steep, for example.

I don't even know what formula I have Promash set for. However I did get Brewlab to analyse my beer and found it was 75% of what was predicted, probably because I have a pretty gentle rolling boil. So I've added a fiddle factor of 75%.

The customers don't complain.
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johnmac
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Post by johnmac » Mon Aug 27, 2007 2:57 pm

None of them allow for IBU extraction after the end of the boil,
I once did a brew with loads of aroma hops boiled for one minute before switch-off. I then sealed it up and left it to cool overnight. It was rather over hopped after twelve hours of steeping!
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oblivious

Post by oblivious » Mon Aug 27, 2007 3:06 pm

johnmac wrote:
None of them allow for IBU extraction after the end of the boil,
I once did a brew with loads of aroma hops boiled for one minute before switch-off. I then sealed it up and left it to cool overnight. It was rather over hopped after twelve hours of steeping!
Hop bomb!
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Vossy1

Post by Vossy1 » Mon Aug 27, 2007 3:49 pm

So I've added a fiddle factor of 75%.
Loving the technical talk :lol: :lol:
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