I'm looking to brew a beer like Dogfish Head's 60 minute IPA.
I've found the following extract recipe (see below). This recipe is supposedly from Sam Calagione's book Extreme Brewing.
I plugged this recipe into Beer Smith and the IBUs are not adding up. You are supposed to mix the Amarillo, Simcoe and Warrior (a total of 1.5 ounces) and then continually add these hops over the 60 minute boil. I entered .05 oz additions of each hop every 6 minutes in Beer Smith. It calculates 45 IBUs. This needs to be around 60 IBUs.
After I get this figured out, I'm going to convert it to an AG recipe.
Is Beer Smith just not calculating this correctly?
Pre-boil tea at 150°F (66°C)
6 gallons (23 L) water
Grain bag
6 ounces (75 g) crushed British
amber malt
Boil
7 pounds (3.2kg) light dry malt extract
(75 minutes)
1/2 ounce (15g) Warrior hops
(Add gradually over 60 minutes)
1/2 ounce (15g) Simcoe hops
(Add gradually over 60 minutes)
1/2 ounces (55g) Amarillo hops
(Add gradually over 60 minutes)
1/2 ounces (55g) Amarillo hops
(End of boil)
Fermentation
Yeast: Wyeast 1187 Ringwood Ale
1 ounce (55g) Amarillo hops
(6 to 7 days)
1/2 ounce (15g) Simcoe hops
(6 to 7 days)
Bottling
5 ounces (125g) priming sugar
STARTING GRAVITY: 1.064
FINAL GRAVITY: 1.017
FINAL TARGET ABV: 6%
IBUs: 60