Blackout Beer Recipe | All Grain Imperial Stout by Killer Hops | Brewer's Friend
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Blackout

385 calories 37.8 g 12 oz
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Beer Stats
Method: All Grain
Style: Imperial Stout
Boil Time: 90 min
Batch Size: 23 liters (fermentor volume)
Pre Boil Size: 22.47 liters
Post Boil Size: 23 liters
Pre Boil Gravity: 1.094 (recipe based estimate)
Post Boil Gravity: 1.115 (recipe based estimate)
Efficiency: 70% (brew house)
Source: Killer Hops
Calories: 385 calories (Per 12oz)
Carbs: 37.8 g (Per 12oz)
Created: Wednesday February 25th 2026
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1.115
1.027
11.5%
55.9
50.0
5.4
n/a
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Fermentables
Amount Fermentable Cost PPG °L Bill %
7.50 kg United Kingdom - Maris Otter Pale7.5 kg Maris Otter Pale 38 3.75 63.3%
1 kg Weyermann - Munich Type II (Dark)1 kg Munich Type II (Dark) 37 10 8.4%
0.50 kg Bestmalz - BEST Black Malt0.5 kg BEST Black Malt - (late mash tun addition) 30 425 4.2%
0.50 kg Weyermann - Carafa I0.5 kg Carafa I - (late mash tun addition) 32 340 4.2%
0.30 kg Belgian Candi Sugar - Dark (275L)0.3 kg Belgian Candi Sugar - Dark (275L) - (late boil kettle addition) 38 275 2.5%
0.50 kg Lactose (Milk Sugar)0.5 kg Lactose (Milk Sugar) - (late boil kettle addition) 41 1 4.2%
0.80 kg Flaked Oats0.8 kg Flaked Oats 33 2.2 6.8%
0.25 kg Simpsons - Crystal T500.25 kg Crystal T50 34 50 2.1%
0.50 kg German - Wheat Malt0.5 kg Wheat Malt 37 2 4.2%
11.85 kg / 0.00 €
 
Hops
Amount Variety Cost Type AA Use Time IBU Bill %
44 g Warrior44 g Warrior Hops Pellet 16 Boil 90 min 55.88 100%
44 g / 0.00 €
 
Mash Guidelines
Amount Description Type Start Temp Target Temp Time
35 L Infusion 68 °C 67 °C 60 min
Steeping 72 °C 72 °C 30 min
Mash Out Steeping 78 °C 78 °C 10 min
10 L Fly Sparge -- 78 °C 20 min
Starting Mash Thickness: 3.65 L/kg
Starting Grain Temp: 67 °C
 
Other Ingredients
Amount Name Cost Type Use Time
5 ml Lactic acid Water Agt Mash 0 min.
0.20 g Servomyces Other Boil 10 min.
1 each Haba Tonka Spice Secondary 5 days
5 each Vanilla Bean Spice Secondary 7 days
 
Yeast
Lallemand - LALBREW® NOTTINGHAM HIGH PERFORMANCE ALE YEAST
Amount:
33 Grams
Cost:
Attenuation (avg):
80%
Flocculation:
High
Optimum Temp:
10 - 22 °C
Starter:
No
Fermentation Temp:
18 °C
Pitch Rate:
1.0 (M cells / ml / ° P) 621 B cells required
0.00 € Yeast Pitch Rate and Starter Calculator
Priming
CO2 Level: 2.2 Volumes
 
Target Water Profile
Burton on Trent (historic)
Ca+2 Mg+2 Na+ Cl- SO4-2 HCO3-
270 41 113 85 720 270
Mash Chemistry and Brewing Water Calculator
"Blackout" Imperial Stout beer recipe by Killer Hops. All Grain, ABV 11.5%, IBU 55.88, SRM 50, Fermentables: (Maris Otter Pale, Munich Type II (Dark), BEST Black Malt, Carafa I, Belgian Candi Sugar - Dark (275L), Lactose (Milk Sugar), Flaked Oats, Crystal T50, Wheat Malt) Hops: (Warrior) Other: (Lactic acid, Servomyces, Haba Tonka, Vanilla Bean)
Recipe Picture
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Recipe QR Code
  • Public: Yup, Shared
  • Last Updated: 2026-02-26 17:31 UTC
NEW Water Requirements:
Blackout
Equipment Profile Used

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Recipe Cost € (EUR)
Recipe costs can be adjusted by changing the batch size. They won't be saved but will give you an idea of costs if your final yield was different.
Gallons
Cost € Cost %
Fermentables €
Steeping Grains
(Extract Only)		 €
Hops €
Yeast €
Other €
Cost Per Barrel € 0.00
Cost Per Pint € 0.00
Total Cost € 0.00
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