Low OG

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DeepSouth
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Low OG

Post by DeepSouth » Sun Aug 09, 2020 11:12 pm

I use a Grainfather. For every brew I get a lower than expected OG. As an example tonight I’ve brewed an IPA with an expected OG of 1.059. My OG is 1.047.

Any thoughts greatly appreciated?

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FUBAR
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Location: Lenham Kent

Re: Low OG

Post by FUBAR » Sun Aug 09, 2020 11:44 pm

Just a few possible causes and solutions , what is your grain crush , what mash efficiency is used when formulating your recipes , do you make sure to stir the grain in properly so there are no dry grain balls , is your sparge slow enough , is the final volume in the FV more than expected ? .
I buy my grain & hops from here http://www.homebrewkent.co.uk/


I have taken more out of alcohol than alcohol has taken out of me - Winston Churchill

DeepSouth
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Joined: Sun Aug 25, 2019 9:41 am

Re: Low OG

Post by DeepSouth » Tue Aug 11, 2020 12:23 pm

Thanks for this.

My mash efficiency was 73%. Brewhouse efficiency was 71.6% but used 75% in the calculation.

No lumps of grain and my sparge was 40 minutes for 8.6l of water.

I ended up with 17l going into the FV rather than the expected 15l.

Thanks again for your help.

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