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 Home Brew Forums > IBU help
11-14-2012, 02:46 PM   #1
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 IBU help

Hey guys, I'm wondering if you can help me out? I'm looking for an IBU calculation for this recipe. I've put it in three different calculators and have come up with three different calculations. Maybe someone can put it in beer smith for me? Wink, wink. Here it is. I'm doing a partial boil of 2.5 gal and a 5 gal batch. Thanks guys.

0.25 lbs Weyerman Carafa III
0.25 lbs Chocolate Malt
0.5 lbs Briess Caramel 80
3.15 lbs Dark malt syrup (60 min)
6 lbs Dark malt syrup late addition (15 min)
1 lbs corn sugar late addition (0 min)

Pellet Hops
1 oz Summit 17-19% (60 min)
1 oz Chinook 11-13%(15 min)
1 oz Centennial 9-12% (10 min)
1 oz Cascade 4.5-7% (5 min)
1 oz Centennial 9-12% (0 min)
1 oz Cascade 4.5-7%(dry hop 5 days)

Thanks guys

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11-14-2012, 03:21 PM   #2
bobbrews
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Need to know the AA% of the hops & whether they are leaf or pellets.

A 2.5 gallon boil will most likely evaporate to somewhere around 1.75 gallons after 60 minutes. If you top off to 5 gallons, that means you're adding 3.25 gallons of plain water, which dilutes the beer dramatically.

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11-14-2012, 03:26 PM   #3
dcHokie
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Quote:
 Originally Posted by bobbrews Need to know the AA% of the hops and whether they are leaf or pellets.
This. And, I'd guess that the different calculators used probably had slightly different values for both AA of the hops as well as the PPG of fermentables, both would skew the recipe's IBU calculation.
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11-14-2012, 04:05 PM   #4
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I just updated the hop listing.

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11-14-2012, 04:53 PM   #5
501irishred
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And BeerSmith says! -

IBU - 45.6
Est OG - 1.076
Color - 31.1
ABV- 8.0

assuming:
Centennial 10%aa
Chinook 13%aa

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11-14-2012, 05:11 PM   #6
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I'm looking for something very hoppy, should I double the hops?

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11-14-2012, 06:41 PM   #7
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Quote:
 Originally Posted by abbysdad2006 I'm looking for something very hoppy, should I double the hops?
Yes, 8% along with 40ish IBUs is not that hoppy, only add hops to your additions within the last 20 minutes. And certainly dry hop with more than 1 oz...I use 1.5 PER GALLON if I want a hoppy brew
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11-14-2012, 06:57 PM   #8
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Quote:
 Originally Posted by Calichusetts Yes, 8% along with 40ish IBUs is not that hoppy, only add hops to your additions within the last 20 minutes. And certainly dry hop with more than 1 oz...I use 1.5 PER GALLON if I want a hoppy brew

I've bought enough hops to double the recipe. i'm thinking of doubling everything except the summit at the 60 min mark and doubling the cascade for the dry hopping and add another oz of summit for dry hopping as well. Makes sense?
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11-14-2012, 07:13 PM   #9
501irishred
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Quote:
 Originally Posted by Calichusetts Yes, 8% along with 40ish IBUs is not that hoppy, only add hops to your additions within the last 20 minutes. And certainly dry hop with more than 1 oz...I use 1.5 PER GALLON if I want a hoppy brew
IBU = International Bittering Units

You can have a very high IBU and still not have a "hoppy" beer and vice versa. I agree with increasing the late additions and increase the dry hop add till your hearts content (more is definitely better here for a true hop head!) . Just know that these additions will do little to the IBU # (or at least that's the idea behind late additions).
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11-14-2012, 07:20 PM   #10
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Quote:
 Originally Posted by abbysdad2006 I've bought enough hops to double the recipe. i'm thinking of doubling everything except the summit at the 60 min mark and doubling the cascade for the dry hopping and add another oz of summit for dry hopping as well. Makes sense?
Perhaps some reverse engineering would help here.

What type of beer are you shooting for, or can you elaborate on the Aroma, Appearance, Flavor and Mouthfeel that you'd like the finished beer to have?
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