bulldogxray
Well-Known Member
When do I take my O.G. reading before boil or after? How does the boil affect the O.G.?
og question
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ChshreCat
Well-Known Member
Are you brewing all grain?
You want to take your OG reading after chilling but before pitching the yeast. If you're extract brewing this would also be after your add and thoroughly mix your top-up water.
Boiling concentrates the wort, which raises the OG.
Boiling concentrates the wort, which raises the OG.
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bulldogxray
Well-Known Member
I am doing all grain. I took mine after I did my boil and chilled the wert, before i pitched my yeast. I guess I did it right. I read something today about taking a pre boil sg and it made me question my method
ChshreCat
Well-Known Member
I ask about all grain because AG brewers will test before the boil to check their efficiency. If you're doing extract, there's no reason. Either way, your OG that you use for reference later on should be after boil.
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bulldogxray
Well-Known Member
Gotcha thanks
A pre-boil SG is nice to know but if you can't measure your volume accurately it's not of much use. If you are able to measure the volume accurately you would be able to adjust the wort with extract or additional water to make sure you hit your target post-boil SG.
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