Hopstand questions

[dstockwell]

Yes, I have done my Google search and read many a posts, but still have some issues. Brewers Friend states a 10% utilization however nothing changes with temp. For a 3G batch I have 1 oz of 4.5% and on ounce of 8% @ 185F for 30 minutes with 10% utilization contributing 28.7 IBU and the same addition @170 for 30 minutes that I marked as 5% utilization contributing 5.7 IBU for a total of 34.5 IBU's.

Now does this seem right or am I missing something. No 60 minute addition all hopstand.

 

[sky4meplease]

If you choose Hopstand as an option you are left to make your own decisions about IBU contributions in your beer.
10% is the default but obviously as the Hopstand temperature drops so does your utilization factor. At some point (maybe below 150-140 degrees) your utilization factor is zero just like dry hopping.
If you use Boil as an option and zero minutes (flame out) you get zero IBU contributions but this would likely not be the case (adding hops to still boiling wort) so I normally plug in 2 or 3 minutes or switch over to Hopstand and choose my numbers as I see fit.
I hope that helps.

 

[radwizard]

I tried messing around with the settings on software (lowering the defalt utilization), because I never felt it was accurate. I now just add 0 minutes for time as stated above, and just do hopstands based on my expirence. I don't get an accurate IBU number, but I am ok with that. I started doing this when I made a Pale Ale with no in boil additions and Beersmith gave me 120 IBU's. That's way, way off....

 

[dstockwell]

Well I guess I will go with this unless I can find more information.

1 oz. Sonnet 4.2% @ 185F hold for 30 minutes utilization set @ 10%
1 oz. Aurora 6.4% @ 185F hold for 30 minutes utilization set @ 10%
1 oz. Sonnet 4.2% @ 170F for 30 minutes utilization set @ 5%
1 oz. Aurora 6.4% @ 170F for 30 minutes utilization set @ 5%

According to BF this should yield 37 IBU's.

 

[sky4meplease]

That sounds like a safe assumption based on the relatively high Hopstand temperatures. You can always go back and change your numbers after the fact and/or make notes as to how you perceive the utilization.
Then you can start to let experience guide you in the future.

 

[TheHopfather]

I completely ignore any IBU calculations for hopstands, both above and below 180F. I get any IBU's I want in the beer from the boil additions and assume the hopstand additions will contribute little to nothing towards IBU's. You'll get some, but if you're building a big IPA or something you won't notice them.

Keep in mind that IBU's <> hop flavor. Hop flavor comes from the hop oils, brewing software isn't good at that distinction when you get to the 0min / hopstand additions. You'll end up with a ton of flavor in the beer, and I suppose hops are bitter, but you really don't need to worry about those IBU calculations. Don't be scared to toss a ton of hops in for a hopstand, I really doubt you'll regret it.

 

[sky4meplease]

Without knowing the rest of the recipe it would seem this will be a good experiment.
If you get 37 IBU's your beer will have some balance otherwise I would think it would come off as sweet with malt and hop flavor/aroma if you get no utilization at all.
It will be important to stick to the numbers in terms of temperature and time to get solid data.

 

[dstockwell]

3.25G
OG: 1.059
US-05

Grain Bill
6.5 lbs. Pale Ale
4 oz. Crystal 40
2 oz. Carafoam
1 oz. Black Patent

 

[sky4meplease]

Perfect.
Keep us posted.

 

[sky4meplease]

It would be fun to do the same recipe and add those hops at flameout and then the same recipe again but Hopstand at a much lower temperature like 130 and compare the three for bitterness.
I do 1 gallon batches for this type of thing. If I get some useful data I will post it up.

 

[OdeCloner]

That's been done!

http://brulosophy.com/2016/02/01/the-hop-stand-hot-vs-chilled-wort-exbeeriment-results/

 

[dstockwell]

Good article, the problem is I'm not doing a 60 min bittering charge, just moving everything to hopstand.

 

[TheHopfather]

I have a recipe straight from Parallel 49 in Vancouver that is all late addition, but that has the first hops going in at 10 min. I really do think that you need some IBUs from a boil addition. You can start really late in the boil, but add something.