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Old 08-17-2010, 05:39 PM   #1
bh10
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Default Pre-boil OG vs. Post-Boil OG

I was searching for some things and ran across that there's a difference of the two, which might be dumb, but I had no clue. So my question is the OG higher or lower pre-boil?

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Old 08-17-2010, 05:40 PM   #2
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Pre-boil will be lower OG. During the boil, you'll lose a lot of water to evaporation, leading to a more concentrated wort -- hence a higher OG post-boil.

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Old 08-17-2010, 05:41 PM   #3
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Makes sense, thank you.

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Old 08-17-2010, 05:42 PM   #4
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Pre-boil should be a lower gravity than post-boil.
As the water boils off, the density of sugars increases raising the gravity.

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