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Supermassive black hole

375 calories 43.4 g 12 oz
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Beer Stats
Method: BIAB
Style: Imperial Stout
Boil Time: 60 min
Batch Size: 2 gallons (fermentor volume)
Pre Boil Size: 2.83 gallons
Post Boil Size: 2.15 gallons
Pre Boil Gravity: 1.084 (recipe based estimate)
Post Boil Gravity: 1.111 (recipe based estimate)
Efficiency: 64% (brew house)
Hop Utilization: 96%
Calories: 375 calories (Per 12oz)
Carbs: 43.4 g (Per 12oz)
Created: Monday May 11th 2026
1.111
1.035
9.9%
74.5
50.0
5.3
n/a
 
Fermentables
Amount Fermentable Cost PPG °L Bill %
4.94 lb United Kingdom - Maris Otter Pale4.94 lb Maris Otter Pale 38 3.75 54.3%
1.14 lb Munich - Light 10L1.14 lb Munich - Light 10L 33 10 10.9%
0.53 lb Munich Dark 20L0.53 lb Munich Dark 20L 34 20 5.2%
0.50 lb Castle Malting - Aromatic Malt0.5 lb Aromatic Malt 35 20 5.1%
0.33 lb United Kingdom - Crystal 55L0.33 lb Crystal 55L 34 55 3.2%
0.43 lb Bairds - Crystal Malt 1500.43 lb Crystal Malt 150 34 57 4.2%
0.57 lb Rolled Oats0.57 lb Rolled Oats 33 2.2 5.4%
0.40 lb United Kingdom - Pale Chocolate0.4 lb Pale Chocolate 33 207 3.8%
0.37 lb United Kingdom - Chocolate0.37 lb Chocolate 34 425 3.6%
0.51 lb United Kingdom - Roasted Barley0.51 lb Roasted Barley 29 550 4.3%
9.72 lbs / $ 0.00
 
Hops
Amount Variety Cost Type AA Use Time IBU Bill %
1.20 oz Northern Brewer1.2 oz Northern Brewer Hops Pellet 7.8 Boil 60 min 62.83 54.5%
0.50 oz East Kent Goldings0.5 oz East Kent Goldings Hops Pellet 5 Boil 15 min 8.33 22.7%
0.50 oz East Kent Goldings0.5 oz East Kent Goldings Hops Pellet 5 Boil 5 min 3.35 22.7%
2.20 oz / $ 0.00
 
Yeast
Wyeast - Irish Ale 1084
Amount:
1 Each
Cost:
Attenuation (avg):
73%
Flocculation:
Medium
Optimum Temp:
62 - 72 °F
Starter:
No
Fermentation Temp:
-
Pitch Rate:
0.35 (M cells / ml / ° P) 69 B cells required
$ 0.00 Yeast Pitch Rate and Starter Calculator
Priming
CO2 Level: 2.25 Volumes
 
Target Water Profile
* Distilled Water
Ca+2 Mg+2 Na+ Cl- SO4-2 HCO3-
0 0 0 0 0 0
Mash Chemistry and Brewing Water Calculator
 
Mash Guidelines
Amount Description Type Start Temp Target Temp Time
Beta-glucan rest Infusion -- 131 °F 15 min
beta-amylase rest Infusion -- 144 °F 50 min
alpha-amylase rest Infusion -- 158 °F 50 min
mash out Infusion -- 170 °F 15 min
Quick Water Requirements
Water Gallons  Quarts
Strike water volume (equipment estimates 5.05 g | 20.2 qt) 4.3 17.2  
Mash volume with grains (equipment estimates 5.83 g | 23.3 qt) 5.07 20.3  
Grain absorption losses -1.22 -4.9  
Mash Lauter Tun losses -0.25 -1  
Pre boil volume (equipment estimates 3.58 g | 14.3 qt) 2.83 11.3  
Boil off losses -1.5 -6  
Hops absorption losses (first wort, boil, aroma) -0.08 -0.3  
Post boil Volume (equipment estimates 2 g | 8 qt) 2.15 8.6  
WARNING: Exceeded batch size - reduce boil size    
Volume into fermentor (equipment estimates 2.15 g | 8.6 qt) 2 8  
Total: 4.3 17.2
Equipment Profile Used: System Default
"Supermassive black hole" Imperial Stout beer recipe by Brewer #382091. BIAB, ABV 9.89%, IBU 74.5, SRM 50, Fermentables: (Maris Otter Pale, Munich - Light 10L, Munich Dark 20L, Aromatic Malt, Crystal 55L, Crystal Malt 150, Rolled Oats, Pale Chocolate, Chocolate, Roasted Barley) Hops: (Northern Brewer, East Kent Goldings)
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  • Public: Yup, Shared
  • Last Updated: 2026-05-11 05:16 UTC