Why are the calculations for IBUs so far off on this recipie? I use Beersmith to track all of my brews, all are extract the majority are kits. The following is a recipie for a Northern Brewers Double IPA kit. When I put it in Beersmith it gives me an IBU value of about 18 yet the kit says it should be 90 IBUs, what am I doing wrong?
NB Double IPA
Brew Type: Extract Date: 1/1/2000
Style: Imperial IPA Brewer: Black Cows Brewing Co.
Batch Size: 5.00 gal Assistant Brewer:
Boil Volume: 2.00 gal Boil Time: 60 min
Equipment: Brew Pot (4 Gallon)
Taste Rating (50 possible points): 0.0
Ingredients Amount Item Type % or IBU
12.00 lb LME Pale Malt Extract (Northern Brewer\Alexanders) (2.2 SRM) Extract 92.3 %
0.75 lb Caramel Pils (Dingemans) (1.5 SRM) Grain 5.8 %
0.25 lb Caramel Malt - 120L (Briess) (120.0 SRM) Grain 1.9 %
1.00 oz Magnum [14.00%] (60 min) Hops 11.5 IBU
1.00 oz Magnum [14.00%] (10 min) Hops 4.2 IBU
1.00 oz Liberty [4.30%] (30 min) Hops 2.7 IBU
1.00 oz Cascade [5.50%] (Dry Hop 3 days) Hops -
2.00 oz Northern Brewer [8.50%] (0 min) Hops -
1 Pkgs Northwest Ale (Wyeast Labs #1332) Yeast-Ale
Beer Profile Estimated Original Gravity: 1.084 SG (1.075-1.095 SG) Measured Original Gravity: 1.084 SG
Estimated Final Gravity: 1.025 SG (1.012-1.020 SG) Measured Final Gravity: 1.025 SG
Estimated Color: 8.0 SRM (8.0-15.0 SRM) Color [Color]
Bitterness: 18.4 IBU (60.0-110.0 IBU) Alpha Acid Units: 3.7 AAU
Estimated Alcohol by Volume: 7.8 % (7.5-10.0 %) Actual Alcohol by Volume: 7.7 %
Actual Calories: 391 cal/pint
Carbonation and Storage Carbonation Type: Corn Sugar Carbonation Volumes: 2.4 (2.2-2.7 vols)
Estimated Priming Weight: 3.8 oz Temperature at Bottling: 60.0 F
Primer Used: - Age for: 8.0 Weeks
NB Double IPA
Brew Type: Extract Date: 1/1/2000
Style: Imperial IPA Brewer: Black Cows Brewing Co.
Batch Size: 5.00 gal Assistant Brewer:
Boil Volume: 2.00 gal Boil Time: 60 min
Equipment: Brew Pot (4 Gallon)
Taste Rating (50 possible points): 0.0
Ingredients Amount Item Type % or IBU
12.00 lb LME Pale Malt Extract (Northern Brewer\Alexanders) (2.2 SRM) Extract 92.3 %
0.75 lb Caramel Pils (Dingemans) (1.5 SRM) Grain 5.8 %
0.25 lb Caramel Malt - 120L (Briess) (120.0 SRM) Grain 1.9 %
1.00 oz Magnum [14.00%] (60 min) Hops 11.5 IBU
1.00 oz Magnum [14.00%] (10 min) Hops 4.2 IBU
1.00 oz Liberty [4.30%] (30 min) Hops 2.7 IBU
1.00 oz Cascade [5.50%] (Dry Hop 3 days) Hops -
2.00 oz Northern Brewer [8.50%] (0 min) Hops -
1 Pkgs Northwest Ale (Wyeast Labs #1332) Yeast-Ale
Beer Profile Estimated Original Gravity: 1.084 SG (1.075-1.095 SG) Measured Original Gravity: 1.084 SG
Estimated Final Gravity: 1.025 SG (1.012-1.020 SG) Measured Final Gravity: 1.025 SG
Estimated Color: 8.0 SRM (8.0-15.0 SRM) Color [Color]
Bitterness: 18.4 IBU (60.0-110.0 IBU) Alpha Acid Units: 3.7 AAU
Estimated Alcohol by Volume: 7.8 % (7.5-10.0 %) Actual Alcohol by Volume: 7.7 %
Actual Calories: 391 cal/pint
Carbonation and Storage Carbonation Type: Corn Sugar Carbonation Volumes: 2.4 (2.2-2.7 vols)
Estimated Priming Weight: 3.8 oz Temperature at Bottling: 60.0 F
Primer Used: - Age for: 8.0 Weeks
