Author Topic: Another Whirlpool IBU Thing  (Read 2791 times)

Offline klickitat jim

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Another Whirlpool IBU Thing
« on: October 11, 2015, 11:24:08 PM »
I recall a recent thread on this but couldn't find it. Maybe it was just a tangent in an unrelated post.

I have a pale ale just about fully carbed on tap. I did a light bittering with Magnum,  then the rest of the hops went in at whirlpool. I do my whirlpool at 170F for 30 minutes. By then the temp is down to about 165F. Anyway... in my calculations I've been using 5% for the utilization number. After tasting this latest beer I think I will just plug in 0% for utilization. The 5% figure tricks me into not using enough of a bittering charge at 60 min. The flavor and aroma is there, just a little wimpy on the bitterness. I think next time I will bump up the amount of whirlpool hops too. Why not, right?

You guys who do beers this way, do you bother with predicting IBUs from the whirlpool? How much are you using in the whirlpool for an APA? Or an IPA? This particular one was 14 grams of Magnum at 60, 40 grams each of Cascade and Centennial at 170/30. Next time I think I'll go 28g magnum at 60, and 60g each of cascade and centennial. (6 gallon batch)

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Re: Another Whirlpool IBU Thing
« Reply #1 on: October 11, 2015, 11:36:15 PM »
I do not include the hops in a hop stand in my IBU calculation. 

Offline HoosierBrew

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Re: Another Whirlpool IBU Thing
« Reply #2 on: October 11, 2015, 11:44:55 PM »
I recall a recent thread on this but couldn't find it. Maybe it was just a tangent in an unrelated post.

I have a pale ale just about fully carbed on tap. I did a light bittering with Magnum,  then the rest of the hops went in at whirlpool. I do my whirlpool at 170F for 30 minutes. By then the temp is down to about 165F. Anyway... in my calculations I've been using 5% for the utilization number. After tasting this latest beer I think I will just plug in 0% for utilization. The 5% figure tricks me into not using enough of a bittering charge at 60 min. The flavor and aroma is there, just a little wimpy on the bitterness. I think next time I will bump up the amount of whirlpool hops too. Why not, right?

You guys who do beers this way, do you bother with predicting IBUs from the whirlpool? How much are you using in the whirlpool for an APA? Or an IPA? This particular one was 14 grams of Magnum at 60, 40 grams each of Cascade and Centennial at 170/30. Next time I think I'll go 28g magnum at 60, and 60g each of cascade and centennial. (6 gallon batch)


I don't calculate any more when I add at 170-175F, Jim. I just don't think it's enough difference to modify your bittering additions. For hop forward beers I add all my target IBUs @ 60, and steep 4-5 (occasionally 6) oz for APA, and 8-12 oz for AIPA. Intensity of hop varieties dictates the lower or higher end of the the spectrums. The IPA numbers sound like a lot (and are) but like I've posted, a lot of pre-whirlpool recipes showed 2 oz (sometimes more) added each @ 15, 10, 5 ,0 minutes. I just use the mindset of adding whatever I used to add late boil into the whirlpool.


EDIT - Obviously if you steep a good bit warmer than that, you're extracting more bitterness and would need to account for it.
« Last Edit: October 11, 2015, 11:52:33 PM by HoosierBrew »
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Offline klickitat jim

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Re: Another Whirlpool IBU Thing
« Reply #3 on: October 11, 2015, 11:49:01 PM »
Right on. I think I'm on the right track then. Thanks guys

Offline neddles

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Re: Another Whirlpool IBU Thing
« Reply #4 on: October 12, 2015, 12:54:14 AM »
+1 to assuming zero isomerization from a hop stand under 175F.

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Re: Another Whirlpool IBU Thing
« Reply #5 on: October 12, 2015, 01:37:01 AM »
+1 to assuming zero isomerization from a hop stand under 175F.
Yeah, all the information I've found suggests about a 10% utilization factor when added at flameout.  Since the smaller kettles we use cool faster with the lower thermal mass, we won't get the 15% and up that the pros do.  I'm pretty sure that BeerSmith's calculation for steep/whirlpool assumes about that percentage.

Offline klickitat jim

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Re: Another Whirlpool IBU Thing
« Reply #6 on: October 12, 2015, 01:44:48 AM »
Off subject, but here's a real sunset. I love fall in Klickitat county

Offline neddles

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Re: Another Whirlpool IBU Thing
« Reply #7 on: October 12, 2015, 01:48:04 AM »
+1 to assuming zero isomerization from a hop stand under 175F.
Yeah, all the information I've found suggests about a 10% utilization factor when added at flameout.  Since the smaller kettles we use cool faster with the lower thermal mass, we won't get the 15% and up that the pros do.  I'm pretty sure that BeerSmith's calculation for steep/whirlpool assumes about that percentage.
Personally I don't throw the hops in until after I've cooled the wort to about 165F. In Beersmith you can set the utilization factor for steeped/whirlpooled hops to whatever you like.

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Re: Another Whirlpool IBU Thing
« Reply #8 on: October 12, 2015, 02:19:04 AM »
Personally I don't throw the hops in until after I've cooled the wort to about 165F. In Beersmith you can set the utilization factor for steeped/whirlpooled hops to whatever you like.

Yeah, at that temp, you're not going to get much in the way of IBUs.  My wort never gets that low in the kettle (I use a plate chiller).

Offline goschman

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Re: Another Whirlpool IBU Thing
« Reply #9 on: October 12, 2015, 02:50:59 AM »
It is good to hear this feedback. I was under the assumption that more bitterness was extracted even at these temps. My current APA is wimpy and not bitter enough because I was too dependent on the IBU figure. It seems that I just need to adjust my bittering hops and leave everything else alone.
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Offline HoosierBrew

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Re: Another Whirlpool IBU Thing
« Reply #10 on: October 12, 2015, 02:57:22 AM »
It is good to hear this feedback. I was under the assumption that more bitterness was extracted even at these temps. My current APA is wimpy and not bitter enough because I was too dependent on the IBU figure. It seems that I just need to adjust my bittering hops and leave everything else alone.

Yeah, it's a situation where IBUs theoretically calculate at a cooler temp like 175F but I don't perceive it enough to account for it.
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Offline erockrph

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Re: Another Whirlpool IBU Thing
« Reply #11 on: October 12, 2015, 03:01:48 AM »
To go one step further, when I steep at 170F, it is specifically because I don't want to get any IBUs from that addition. This allows me to really dial in my bittering separately without having to make a WAG about utilization from my hop stand. You can adjust your flavor and IBUs completely separately that way.
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Offline HoosierBrew

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Re: Another Whirlpool IBU Thing
« Reply #12 on: October 12, 2015, 03:03:49 AM »
To go one step further, when I steep at 170F, it is specifically because I don't want to get any IBUs from that addition. This allows me to really dial in my bittering separately without having to make a WAG about utilization from my hop stand. You can adjust your flavor and IBUs completely separately that way.

Yep, exactly.
Jon H.

Offline TexasHumuluslupulushead

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Re: Another Whirlpool IBU Thing
« Reply #13 on: October 12, 2015, 01:38:22 PM »
I recall a recent thread on this but couldn't find it. Maybe it was just a tangent in an unrelated post.

I have a pale ale just about fully carbed on tap. I did a light bittering with Magnum,  then the rest of the hops went in at whirlpool. I do my whirlpool at 170F for 30 minutes. By then the temp is down to about 165F. Anyway... in my calculations I've been using 5% for the utilization number. After tasting this latest beer I think I will just plug in 0% for utilization. The 5% figure tricks me into not using enough of a bittering charge at 60 min. The flavor and aroma is there, just a little wimpy on the bitterness. I think next time I will bump up the amount of whirlpool hops too. Why not, right?

You guys who do beers this way, do you bother with predicting IBUs from the whirlpool? How much are you using in the whirlpool for an APA? Or an IPA? This particular one was 14 grams of Magnum at 60, 40 grams each of Cascade and Centennial at 170/30. Next time I think I'll go 28g magnum at 60, and 60g each of cascade and centennial. (6 gallon batch)


I don't calculate any more when I add at 170-175F, Jim. I just don't think it's enough difference to modify your bittering additions. For hop forward beers I add all my target IBUs @ 60, and steep 4-5 (occasionally 6) oz for APA, and 8-12 oz for AIPA. Intensity of hop varieties dictates the lower or higher end of the the spectrums. The IPA numbers sound like a lot (and are) but like I've posted, a lot of pre-whirlpool recipes showed 2 oz (sometimes more) added each @ 15, 10, 5 ,0 minutes. I just use the mindset of adding whatever I used to add late boil into the whirlpool.


EDIT - Obviously if you steep a good bit warmer than that, you're extracting more bitterness and would need to account for it.

For entry forms into comps...

Lets say i brew an AIPA- in fact lets use the beauty in my secondary right now...

.75 warrior FWH
2oz mosaic, citra and galaxy Whirlpool 172-178 for 45 min
dry hopped with 1oz mosaic, citra, galaxy and summer

if i were to enter this into the AIPA category the minimum IBUs is 40.  If the program I used is correct, the warrior additions in First wort were only 33.  If all the additions in whirlpool dont account for any IBUs, I dont meet the criteria for an AIPA- however after smelling and tasting it after racking to secondary prior to dryhopping, there is no doubt that its an AIPA...






Thoughts?
« Last Edit: October 12, 2015, 01:53:03 PM by TexasHumuluslupulushead »
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Offline Stevie

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Re: Another Whirlpool IBU Thing
« Reply #14 on: October 12, 2015, 01:51:48 PM »
If it tastes like an IPA, enter as an IPA. They won't know what your software says and I'm sure it's higher than that anyhow.