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Old 05-03-2012, 12:47 AM   #1
ILBMF
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I've been doing some batches of Vinny's Pliny the Elder recipe and I'm a little sick of the 90 minute boil time. Is there any benefit to a 90 minute boil other than better hop utilization? I'd like to make this beer and some similar, but use a 60 minute boil and course I'd need to make an adjustment to keep the IBU's up.

Any thoughts on this? Am I missing the boat on the benefits of a 90 minute boil time? I know some claim that FWH additions seem to make for a smoother bitterness and I am curious if this may be the case with a 90 minute boil too.
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Old 05-03-2012, 01:03 AM   #2
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The 90 minute boil is to drive off DMS in the wort.
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Old 05-03-2012, 01:20 AM   #3
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Quote:
Originally Posted by Deuce View Post
The 90 minute boil is to drive off DMS in the wort.
That only really matters if you use pils malt and even then it may not be necessary. There is very little increase in utilization beyond 60 min.
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Old 05-03-2012, 01:25 AM   #4
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Quote:
Originally Posted by Denny View Post
That only really matters if you use pils malt and even then it may not be necessary. There is very little increase in utilization beyond 60 min.
I agree with this. I dont know about the pils boil time becuase I have always done the 90 min boil with it but im sure its not that big of a deal. I do the Pliny the Elder quite often and only boil for for 60 min. I have done 90 before and never noticed a difference.
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Old 05-03-2012, 01:30 AM   #5
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A lot of pro brewers do 90 minute boils. You also get more concentration of wort.
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Old 05-03-2012, 03:49 AM   #6
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Quote:
Originally Posted by doctorRobert View Post
You also get more concentration of wort.
I've done it for this reason in the past for a quad that I had a larger than average boil volume on because of the grain bill.

I think you also can get the benefit of additional caramelization, which was also something desired in the case of my quad...
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Old 05-03-2012, 05:24 AM   #7
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Quote:
Originally Posted by doctorRobert View Post
A lot of pro brewers do 90 minute boils. You also get more concentration of wort.
In theory you would increase your volume to account for the longer boil. The target is post boil OG so the starting volume will determine whether you hit that in 45 min, 60 min, 70 min, or any other value.

You can concentrate the boil by just starting with less pre boil volume.

I can see where a high gravity all grain recipe could produce a large volume that would probably require a longer boil to hit the design OG.
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Old 05-03-2012, 10:22 PM   #8
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Thanks guys, I appreciate that.
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Old 05-03-2012, 11:37 PM   #9
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When you get the 60 minute adjusted recipe I'd be interested in seeing it. Haven't done Pliny yet, and I don't want to do a 90 minute boil because of the propane cost.

 
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Old 05-03-2012, 11:48 PM   #10
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After reading this, I've moved to standard 90 minute boils, but don't add hops until the 60 minute mark.

http://bavarianbrewerytech.com/news/boilhops.htm

I don't know whether it's made any real difference in quality of the final product.

 
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