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BrewDog - Jack Hammer

212 calories 17.5 g 12 oz
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Beer Stats
Method: All Grain
Style: English IPA
Boil Time: 60 min
Batch Size: 20 liters (fermentor volume)
Pre Boil Size: 25 liters
Efficiency: 79% (brew house)
Source: BrewDog DIY
Calories: 212 calories (Per 12oz)
Carbs: 17.5 g (Per 12oz)
URL: https://untappd.com/b/brewdog-jack-hammer/196338
Created: Friday June 1st 2012
1.065
1.010
7.2%
250.0
7.5
4.4
n/a
 
Fermentables
Amount Fermentable Cost PPG °L Bill %
5.80 kg United Kingdom - Extra Pale Malt5.8 kg Extra Pale Malt 33 1.8 100%
5.80 kg / $ 0.00
 
Hops
Amount Variety Cost Type AA Use Time IBU Bill %
25 g Centennial25 g Centennial Hops Leaf/Whole 10 Boil 60 min 5.3%
30 g Columbus30 g Columbus Hops Leaf/Whole 15 Boil 60 min 6.4%
18.80 g Centennial18.8 g Centennial Hops Leaf/Whole 10 Boil 30 min 4%
18.80 g Columbus18.8 g Columbus Hops Leaf/Whole 15 Boil 30 min 4%
50 g Centennial50 g Centennial Hops Leaf/Whole 10 Boil 10 min 10.7%
25 g Columbus25 g Columbus Hops Leaf/Whole 15 Boil 10 min 5.3%
100 g Amarillo100 g Amarillo Hops Leaf/Whole 8.6 Dry Hop Day 5 21.4%
100 g Citra100 g Citra Hops Leaf/Whole 11 Dry Hop Day 5 21.4%
100 g Simcoe100 g Simcoe Hops Leaf/Whole 12.7 Dry Hop Day 5 21.4%
467.60 g / $ 0.00
 
Yeast
Wyeast - American Ale II 1272
Amount:
1 Each
Cost:
Attenuation (custom):
84.6%
Flocculation:
High
Optimum Temp:
16 - 22 °C
Starter:
No
Fermentation Temp:
21 °C
Pitch Rate:
-
$ 0.00 Yeast Pitch Rate and Starter Calculator
 
Mash Guidelines
Amount Description Type Start Temp Target Temp Time
20 L Mash In Infusion -- 65 °C 75 min
Quick Water Requirements
Water Liters
Strike water volume at mash thickness of 3.7 L/kg 21.2
Mash volume with grains 25
Grain absorption losses -5.8
Remaining sparge water volume (equipment estimates 12.1 L) 10.5
Mash Lauter Tun losses -0.9
Pre boil volume (equipment estimates 26.5 L) 25
Boil off losses -5.7
Hops absorption losses (first wort, boil, aroma) -0.8
Post boil Volume 20
Going into fermentor 20
Total: 31.7  
Equipment Profile Used: System Default
 
Notes

First Brewed 06/2012

Hopped beyond the point at which IBUs are measurable, only the most hardened palate will get beyond Jack Hammer's intensely resinous pithy bitterness and to the grapefruit, orange zest and dry biscuity malt beyond. You could brew this with less hops, but really, why would you bother?
Be aware that this is probably the hoppiest beer you will ever make. Make sure you use fresh hops, for a massive fresh grapefruit hit. Have everything else in your store cupboard, and buy your hops last, as close to brew day as possible!

https://www.brewdog.com/beers/diy-dog

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  • Last Updated: 2019-08-22 19:46 UTC