IBUs

[Chefjp]

Hello, im planning on brewing a CDA, I´m using brewing tv´s recipe for: Stone Sublimely self-righteous ale.
In the recipe for 11 galons it calls for:
8 oz chinook (60 min)
4.3 oz simcoe 0 min.
4.3 oz amarillo 0 min.
4.3 oz simcoe dry hop
4.3 oz amarillo Dry hop

I put this recipe into beersmith and it gives me an IBU count of 136.6. But in Stone´s web page it says that that beer has 90 IBUs.

Should I cut tje hops in the recipe to get 90 IBUs, or follow the recipe as it is?

Thanks

 

[agodfrey11]

Anything around 100 ibus is hard to achieve. I would stay where you are in beer smith, giving you have an appropriate starting gravity.

 

[Chefjp]

The OG is 1.080

 

[TimpanogosSlim]

One thing to keep in mind when calculating ibu vs. hop time and quantity is that the AA rating of the actual hops you have in hand varies from the average AA of that style of hops.

My recent Rogue Hazelnut Brown Nectar clone calculated out to 1.1oz of Perle and 1oz of Sterling, but after correcting the AA% in brewtarget for the AA% of the hops i bought at the LHBS i ended up closer to 0.6oz of Perle and 0.8oz of Sterling.

Which makes me wonder why we distribute recipes with quantities of hops at time and AA instead of IBU vs. time.

 

[Draken]

Hello, im planning on brewing a CDA, I´m using brewing tv´s recipe for: Stone Sublimely self-righteous ale.
In the recipe for 11 galons it calls for:
8 oz chinook (60 min)
4.3 oz simcoe 0 min.
4.3 oz amarillo 0 min.
4.3 oz simcoe dry hop
4.3 oz amarillo Dry hop

I put this recipe into beersmith and it gives me an IBU count of 136.6. But in Stone´s web page it says that that beer has 90 IBUs.

Should I cut tje hops in the recipe to get 90 IBUs, or follow the recipe as it is?

Thanks

Once you get in the 90s the calculation for IBIs fails. There is a limit to how much you can actually get. Look at the recipe for Pliny the Elder. Actual measured IBUs are 95-100. Calculated are in the 200+

 

[Chefjp]

so should I brew the recipe as is?

 

[RobbyBeer]

so should I brew the recipe as is?

I would agree with the above posts..
Check the alpha acid levels of your hops and compare it to the original recipe.

But more than likely just brew the beer as is.
The only thing that really matters in the end is the way it tastes to you.
I've had far too many home brews from people that tried too hard to reach specific numbers, and weren't thinking about what's most important.... Taste.
And that is what gives the "home brew" flavor, in my opinion.

But overall I'd say just brew it... If you're worried that it may be too hoppy.. Take some out.

 

[TimpanogosSlim]

Once you get in the 90s the calculation for IBIs fails. There is a limit to how much you can actually get. Look at the recipe for Pliny the Elder. Actual measured IBUs are 95-100. Calculated are in the 200+

I vaguely recall something about the % of AA that ends up in the beer vs. perceived bitterness when taking into account the body and sweetness of the beer itself.

To the extent that some russian imperial stouts may have a calculated IBU way above 100 but the perceived bitterness is less than most IPAs.

 

[Chefjp]

One question, in this recipe only the 8 oz of chinook (60 min) is the only one giving IBUs?

 

[ArcaneXor]

ChefJP,

Stone most likely measures their IBUs. IBU calculations will differ from measured IBUs, and the different formulas (Rager, Tinseth, etc) will differ from each other, sometimes by ridiculously large margins.

You will get bitterness from the 0-minute hops as well (even though the formulas will tell you that they don't) as long as the wort is hotter than about 180 degrees.

 

[Chefjp]

Wow,im really confused!!!!

 

[ArcaneXor]

I'll try to elaborate.

Determining the true IBUs of a beer requires expensive laboratory equipment. Because smaller breweries and homebrewers can't generally afford and don't have access to that equipment, a series of formulas have been developed to estimate the IBUs. Unfortunately, those formulas just aren't very good in certain situations, especially when the beer is very bitter and uses non-traditional hopping techniques.

 

[RobbyBeer]

Bottom Line.. Stick to the quote that we should all abide by.
"relax, don't worry, have a home brew "
If it is a tried and tested recipe, just follow it, but if you want to have some more fun.. Change a few things up.
The grain bill and hops for this recipe looks good to me.
Don't worry so much about the numbers, the best thing to do is to document everything you do, and if need be make, some changes next time.
You'll get close enough to your projected IBU goal..