I am looking at doing the extract recipe from BYO (Pasted below). Its similar to the recipe posted at the top of this thread. However, the hops seem to be lacking. The IBUs for the recipe is 67, but when I plug it into Hopville or Brewtarget the IBUs are in the low 50s. Could there be a typo in the recipe? Or, better to trust the recipe over the calculations?
Lagunitas IPA clone
(5 gallons/19 L, all-grain)
OG = 1.059 FG = 1.015
IBU = 67 SRM = 9 ABV = 5.7%
11.33 lbs. (5.1 kg) 2-row pale malt
0.4 lbs. (0.18 kg) dextrine malt
0.3 lbs. (0.14 kg) crystal malt (60 °L)
0.2 lbs. (91 g) light Munich malt (4 °L)
8.25 AAU Horizon hops (60 mins)
(0.75 oz./21 g of 11% alpha acids)
4.5 AAU Cascades hops (30 mins)
(0.90 oz./26 g of 5.0% alpha acids)
1.25 AAU Willamette hops (30 mins)
(0.25 oz./7.1 g of 5.0% alpha acids)
15.75 AAU Cascade hops (0 min)
(3.15 oz./89 g of 5.0% alpha acids)
Wyeast 1056 (American Ale) or White
Labs WLP001 (California Ale) yeast
Step by Step
Mash at 154 °F (68 °C). Boil for 90 minutes, adding hops as indicated in the ingredient list. After the boil, let the wort sit for 15 minutes before cooling. Ferment at 70 °F (21 °C).
Replace pale malt with 5 lbs. 9 oz. (2.5 kg) of light dried malt extract and 1.0 lb. (0.45 kg) 2-row pale malt. Steep crushed pale malt and other malts in 76 oz. (2.2 L) of water at 154 °F (68 °C) for 45 minutes.