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Old 06-26-2011, 08:39 PM   #1
Kayos
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I've been brewing AG for 5 years. Got it down to a 68-71% eff every time with a converted cooler, 1.25 qts./lb of grain mash and my mash temps are right on.

The last 3 batches have been in the low 50's for eff. I am having to boil all my brews for 90 minutes plus to get my OG right.

The only thing I can think of is MoreBeer (all my ingredients are from there - always have been) has been not doing as good of a crush. It's the only thing I don't have control over because I have never needed/bought a grain crusher.

Thoughts?


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Old 06-26-2011, 08:50 PM   #2
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Time to get a mill. Do you have a manifold in your cooler?



 
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Old 06-26-2011, 08:51 PM   #3
Strave19
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It sounds like it must be the crush if it looks noticeably worse... You could call them and see if something has changed with the way they crush, or just make sure that they are aware of the problem.

Other thought would be if something is different with your water supply?

 
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Old 06-26-2011, 09:16 PM   #4
mcaple1
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How would boiling for 90 minutes fix your OG? Your post boil volume should be the same for your recipoe regardless of boil time...preboil amount will vary though if your post boil volume remains constant. Therefore, my earlier question remains...why would more boil improve your target OG????

 
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Old 06-26-2011, 09:20 PM   #5
Strave19
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Boil longer to concentrate the wort and hit intended gravity ... at the expense of final volume of course

 
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Old 06-26-2011, 09:21 PM   #6
mlg5039
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Quote:
Originally Posted by mcaple1 View Post
How would boiling for 90 minutes fix your OG? Your post boil volume should be the same for your recipoe regardless of boil time...preboil amount will vary though if your post boil volume remains constant. Therefore, my earlier question remains...why would more boil improve your target OG????
You can sparge more, start with more preboil volume, boil longer, and end up with a more appropriate OG.
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Old 06-26-2011, 09:22 PM   #7
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Quote:
Originally Posted by Strave19 View Post
Boil longer to concentrate the wort and hit intended gravity ... at the expense of final volume of course
Exactly. This way you still end up with your intended recipe, just not as much of it.

 
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Old 06-26-2011, 09:31 PM   #8
mcaple1
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Quote:
Originally Posted by mlg5039 View Post
You can sparge more, start with more preboil volume, boil longer, and end up with a more appropriate OG.
Well,then you will need to adjust your hop additions or else the utilization will be way off.

 
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Old 06-26-2011, 09:53 PM   #9
mcaple1
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true

 
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Old 06-26-2011, 10:17 PM   #10
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If you have been AG'ing for 5 years you should have noticed a difference in the crush immediately, at least one bad enough to effect your efficiency that much. So as someone else mentioned you might consider that your water has changed. How about brewing a batch with some store bought RO water and a bit of Calcium Chloride (see water primer in Brew Science threads).



 
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