Recipe provided by Vinnie Cilurzo (Zumurgy 2009 - modifications to fermentables made to hit target ABV, SGs and SRM based on my system and 68% efficiency).
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where the hop bill says Columbus it is CTZ according to the pdf from Vinnie.
Ingredients:
for 6.0 gallons (22.7 L) [Net: 5 gallons (18.9 L) after hop loss]
13.25 lb (6.01 kg) Two-Row pale malt
0.6 lb (272 g) Crystal 45 malt
0.6 lb (272 g) Carapils (Dextrin) Malt
0.75 lb (340 g) Dextrose (corn) sugar
3.50 oz (99 g) Columbus 13.90% A.A. 90 min.
0.75 oz (21 g) Columbus 13.90% A.A. 45 min.
1.00 oz (28 g) Simcoe 12.30% A.A. 30 min.
1.00 oz (28 g) Centennial 8.00% A.A. 0 min.
2.50 oz (71 g) Simcoe 12.30% A.A. 0 min.
1.00 oz (28 g) Columbus 13.90% A.A. Dry Hop (12 to 14 days total)
1.00 oz (28 g) Centennial 9.10% A.A. Dry Hop (12 to 14 days total)
1.00 oz (28 g) Simcoe 12.30% A.A. Dry Hop (12 to 14 days total)
0.25 oz (7 g) Columbus 13.90% A.A. Dry Hop (5 days to go in dry hop)
0.25 oz (7 g) Centennial 9.10% A.A. Dry Hop (5 days to go in dry hop)
0.25 oz (7 g) Simcoe 12.30% A.A. Dry Hop (5 days to go in dry hop)
*Tomahawk/Zeus can be substituted for Columbus
White Labs WLP001 California Ale Yeast or
Wyeast 1056 American Ale Yeast
Original Gravity: 1.072
Final Gravity: 1.011
Extract Efficiency: 75 percent
IBUs: 90-95 (actual/not calculated)
ABV: 8.2%
SRM: 7
Directions:
Mash grains at 151-152° F (66-67° C) for an hour or until starch conversion is complete.
Mash out at 170° F (77° C) and sparge. Collect 8 gallons (30 L) of runoff, stir in dextrose, and bring to a boil.
Add hops as indicated in the recipe.
After a 90 minute boil, chill wort to 67° F (19° C) and transfer to fermenter.
Pitch two packages of yeast or a yeast starter and aerate well.
Ferment at 67° F (19° C) until fermentation activity subsides, then rack to secondary.
Add first set of dry hops on top of the racked beer and age 7-9 days, then add the second set. Age five more days then bottle or keg the beer.
URL: https://www.homebrewersassociation.org/attachments/0000/6351/doubleIPA.pdf