prrriiide
Well-Known Member
- Joined
- Aug 30, 2009
- Messages
- 672
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I have a real head-scratcher...
I have my efficiency in BeerSmith set to 80%, which has historically been pretty close.
The last several brews (4-5), the pre-boil gravity has been off - low - anywhere from 5-10 points via refactometer (calibrated with distilled water). I've adjusted with a longer boil and/or DME additions to correct. But...by the end of the boil, the grav is high by the same amount. Yesterday's brew was 5 points low at pre-boil, so we boiled until the wort was at target pre-boil grav. At the end of the the boil, it was 5 points high.
Pre-boil volume was spot-on. Post-boil was, of course a little low due to the extra boil-off. If I had left it alone, I think it would have hit almost exactly.
WTH is going on here?
I have my efficiency in BeerSmith set to 80%, which has historically been pretty close.
The last several brews (4-5), the pre-boil gravity has been off - low - anywhere from 5-10 points via refactometer (calibrated with distilled water). I've adjusted with a longer boil and/or DME additions to correct. But...by the end of the boil, the grav is high by the same amount. Yesterday's brew was 5 points low at pre-boil, so we boiled until the wort was at target pre-boil grav. At the end of the the boil, it was 5 points high.
Pre-boil volume was spot-on. Post-boil was, of course a little low due to the extra boil-off. If I had left it alone, I think it would have hit almost exactly.
WTH is going on here?