Cast Iron Stout - Beer Recipe - Brewer's Friend

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Cast Iron Stout

137 calories 12.7 g 330 ml
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Beer Stats
Method: BIAB
Style: Oatmeal Stout
Boil Time: 60 min
Batch Size: 23 liters (fermentor volume)
Pre Boil Size: 29.06 liters
Post Boil Size: 23 liters
Pre Boil Gravity: 1.035 (recipe based estimate)
Post Boil Gravity: 1.045 (recipe based estimate)
Efficiency: 72% (brew house)
Calories: 137 calories (Per 330ml)
Carbs: 12.7 g (Per 330ml)
Created: Saturday April 18th 2026
1.045
1.009
4.8%
23.7
40.3
5.5
n/a
 
Fermentables
Amount Fermentable Cost PPG °L Bill %
420 g Simpsons - Dextrin Malt420 g Dextrin Malt 31 1.1 8.4%
310 g Simpsons - Amber Malt310 g Amber Malt 31.8 20.8 6.2%
100 g Simpsons - Roasted Barley100 g Roasted Barley 28.52 600 2%
340 g Simpsons - Golden Naked Oats340 g Golden Naked Oats 27 7 6.8%
310 g Simpsons - Chocolate Malt310 g Chocolate Malt 31.7 444 6.2%
2,860 g Simpsons - Finest Pale Ale Maris Otter2860 g Finest Pale Ale Maris Otter 37 2.6 57.3%
650 g Simpsons - Brown Malt650 g Brown Malt 32 187.93 13%
4,990 g / £ 0.00
 
Hops
Amount Variety Cost Type AA Use Time IBU Bill %
13 g Admiral13 g Admiral Hops Pellet 14.5 Boil 60 min 23.71 100%
13 g / £ 0.00
 
Yeast
Fermentis - Safale - American Ale Yeast US-05
Amount:
1 Each
Cost:
Attenuation (avg):
81%
Flocculation:
Medium
Optimum Temp:
12 - 25 °C
Starter:
No
Fermentation Temp:
-
Pitch Rate:
0.35 (M cells / ml / ° P) 90 B cells required
£ 0.00 Yeast Pitch Rate and Starter Calculator
Priming
CO2 Level: 1.25 Volumes
 
Target Water Profile
Thames Water
Ca+2 Mg+2 Na+ Cl- SO4-2 HCO3-
0 0 0 0 0 0
Mash Chemistry and Brewing Water Calculator
Quick Water Requirements
Water Liters
Strike water volume (equipment estimates 34.7 L) 35
Mash volume with grains (equipment estimates 37.9 L) 38.2
Grain absorption losses -5
Mash Lauter Tun losses -0.9
Pre boil volume (equipment estimates 28.8 L) 29.1
Boil off losses -5.7
Hops absorption losses (first wort, boil, aroma) -0.1
Post boil Volume 23
Volume into fermentor 23
Total: 35  
Equipment Profile Used: System Default
"Cast Iron Stout" Oatmeal Stout beer recipe by Obscure. BIAB, ABV 4.76%, IBU 23.71, SRM 40.28, Fermentables: (Dextrin Malt, Amber Malt, Roasted Barley, Golden Naked Oats, Chocolate Malt, Finest Pale Ale Maris Otter, Brown Malt) Hops: (Admiral)
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  • Public: Yup, Shared
  • Last Updated: 2026-04-19 06:49 UTC