[pyrite]

I plugged this recipe into pro-mash and found that the IBU's is 51.5 not 25 as stated in the recipe.

Am I doing something wrong?

MaiBock Fix
Recipe by George Fix from Big Brew 2002
Extract with grain
Ingredients for 5 Gallons:
8.5 lbs Extra Light Dry Malt Extract
0.5 lbs CaraVienna Malt
2.00 oz Hallertauer Mittelfruh Hop Pellets, 4.5% AA, 60 min
0.75 oz Hallertau Hersbrucker Hop Pellets, 4.75% AA, 30 min
0.75 oz Hallertauer Mittelfruh Hop Pellets, 4.5% AA, 15 min
Wyeast 2633 (if you can't find 2633, 2124 Bohemian Lager is a good second choice)
 
OG: 1.070-1.074
FG: 1.016-1.018
IBU: 25

[a10t2]

I get anywhere from 40 to 58 IBU, depending on which formula you use. That isn't out of line for the style - 25 would be pretty low. Could just be a typo.

[christo]

Vital Statistics:
OG: 1.064 – 1.072
IBUs: 23 – 35
FG: 1.011 – 1.018
SRM: 6 – 11
ABV: 6.3 – 7.4%

I'd modify to the style range.  Probably 1 oz. of bittering will basically do it.  

Edit:  that's if you are doing full-volume boil.  If you are doing a concentrated extract boil, say 2 gallons, then the calculated IBUs are close to 25 using the recipe as is.

[Janis]

I plugged this recipe into pro-mash and found that the IBU's is 51.5 not 25 as stated in the recipe.

Am I doing something wrong?

MaiBock Fix
Recipe by George Fix from Big Brew 2002
Extract with grain
Ingredients for 5 Gallons:
8.5 lbs Extra Light Dry Malt Extract
0.5 lbs CaraVienna Malt
2.00 oz Hallertauer Mittelfruh Hop Pellets, 4.5% AA, 60 min
0.75 oz Hallertau Hersbrucker Hop Pellets, 4.75% AA, 30 min
0.75 oz Hallertauer Mittelfruh Hop Pellets, 4.5% AA, 15 min
Wyeast 2633 (if you can't find 2633, 2124 Bohemian Lager is a good second choice)
 
OG: 1.070-1.074
FG: 1.016-1.018
IBU: 25

Hi Mario,

Remember this recipe is from before 2002, so the ingredients and process may account for some differences.  More importantly, with an extract recipe it is assumed that you are doing a partial boil, so the utilization of the hop oils is reduced.  In your ProMash file, change the wort size to 3 gallons.  This will drop the IBUs some, but not all the way to 25.  This recipe was taken directly from the Big Brew recipes on the Homebrewopedia; feel free to make whatever adjustments you feel are necessary when you brew the recipe.

Cheers,
   Janis

[jeffy]

Wow, Janis.  I see you have five gold stars now.  You must be famous!

[denny]

Wow, Janis.  I see you have five gold stars now.  You must be famous!

Not only is she famous, she's an administrator!

[tschmidlin]

Wow, Janis.  I see you have five gold stars now.  You must be famous!

Uhh . . . have you looked below your own name Jeff?

[bluesman]

Wow, Janis.  I see you have five gold stars now.  You must be famous!

Uhh . . . have you looked below your own name Jeff?

Tom...He already knows he's famous. 

[tschmidlin]

Wow, Janis.  I see you have five gold stars now.  You must be famous!

Uhh . . . have you looked below your own name Jeff?

Tom...He already knows he's famous. 

Good point!  My bad.

[jeffy]

Wow, Janis.  I see you have five gold stars now.  You must be famous!

Uhh . . . have you looked below your own name Jeff?

Tom...He already knows he's famous. 

Good point!  My bad.

Hey!  Leave the forum to work a little bit and come back to this? 
Her stars are darker than mine.......

[pyrite]

Thanks all, for clearing the partial boil / extract ibu contribution.  I've always wondered why a lot of recipes don't include anticipated IBU's...

[Janis]

Wow, Janis.  I see you have five gold stars now.  You must be famous!

Hey Jeff,
Better famous than infamous.   
Cheers,
    Janis