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Bloated Wallrus in a hat

546 calories 55.7 g 12 oz
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Beer Stats
Method: BIAB
Style: Russian Imperial Stout
Boil Time: 60 min
Batch Size: 5 gallons (fermentor volume)
Pre Boil Size: 5 gallons
Post Boil Size: 5 gallons
Pre Boil Gravity: 1.161 (recipe based estimate)
Post Boil Gravity: 1.161 (recipe based estimate)
Efficiency: 70% (brew house)
Calories: 546 calories (Per 12oz)
Carbs: 55.7 g (Per 12oz)
Created: Wednesday June 24th 2026
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OG: 1.133 FG: 1.029 ABV: 13.6% IBU: 69

1.161
1.042
15.7%
66.7
50.0
5.5
n/a
 
Fermentables
Amount Fermentable Cost PPG °L Bill %
12 lb US - Pale 2-Row12 lb Pale 2-Row 37 1.8 38.7%
12 lb United Kingdom - Golden Promise12 lb Golden Promise 37 3 38.7%
1 lb Flaked Oats1 lb Flaked Oats 33 2.2 3.2%
0.50 lb Simpsons - Chocolate Malt0.5 lb Chocolate Malt 31.7 444 1.6%
0.25 lb Bairds - Roasted Barley0.25 lb Roasted Barley 33 600 0.8%
1.50 lb United Kingdom - Crystal 90L1.5 lb Crystal 90L 33 90 4.8%
1 lb United Kingdom - Crystal Rye1 lb Crystal Rye 33 90 3.2%
0.25 lb Weyermann - Carafa Special Type III0.25 lb Carafa Special Type III 29.9 525 0.8%
1.50 lb American - Caramel / Crystal 40L1.5 lb Caramel / Crystal 40L 34 40 4.8%
1 lb Brown Sugar1 lb Brown Sugar 45 15 3.2%
31 lbs / $ 0.00
 
Hops
Amount Variety Cost Type AA Use Time IBU Bill %
4 oz Artisan - Centennial4 oz Centennial Hops Pellet 9.7 Boil 60 min 54.36 28.6%
8 oz East Kent Goldings8 oz East Kent Goldings Hops Pellet 5 Boil 5 min 11.17 57.1%
2 oz Artisan - Centennial2 oz Centennial Hops Pellet 9.7 Boil 1 min 1.17 14.3%
14 oz / $ 0.00
 
Other Ingredients
Amount Name Cost Type Use Time
48 oz Oyster shells Water Agt Mash 1 hr.
48 oz Oysters Water Agt Mash 15 min.
48 oz Oyster brine Water Agt Mash 1 min.
 
Yeast
Wyeast - Rogue Pacman 1764
Amount:
1 Each
Cost:
Attenuation (avg):
75%
Flocculation:
Med-High
Optimum Temp:
60 - 72 °F
Starter:
No
Fermentation Temp:
70 °F
Pitch Rate:
0.35 (M cells / ml / ° P) 241 B cells required
$ 0.00 Yeast Pitch Rate and Starter Calculator
Priming
Method: sucrose       Amount: 2.1 oz       Temp: 68 °F       CO2 Level: 1.65 Volumes
 
Target Water Profile
Crystal Geyser Alpine Spring 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
5 gal Infusion 156 °F 156 °F 60 min
Quick Water Requirements
Water Gallons  Quarts
Strike water volume (equipment estimates 10.95 g | 43.8 qt) 8.93 35.7  
Mash volume with grains (equipment estimates 13.35 g | 53.4 qt) 11.33 45.3  
Grain absorption losses -3.75 -15  
Mash Lauter Tun losses -0.25 -1  
Volume increase from sugar/extract (early additions) 0.07 0.3  
Pre boil volume (equipment estimates 7.03 g | 28.1 qt) 5 20  
Boil off losses -1.5 -6  
Hops absorption losses (first wort, boil, aroma) -0.53 -2.1  
Post boil Volume 5 20  
Volume into fermentor 5 20  
Total: 8.93 35.7
Equipment Profile Used: System Default
"Bloated Wallrus in a hat" Russian Imperial Stout beer recipe by Mug Banicken. BIAB, ABV 15.66%, IBU 66.7, SRM 50, Fermentables: (Pale 2-Row, Golden Promise, Flaked Oats, Chocolate Malt, Roasted Barley, Crystal 90L, Crystal Rye, Carafa Special Type III, Caramel / Crystal 40L, Brown Sugar) Hops: (Centennial, East Kent Goldings) Other: (Oyster shells, Oysters, Oyster brine)
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  • Last Updated: 2026-06-24 22:04 UTC