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Old Dirty Bastard

193 calories 17.3 g 12 oz
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Beer Stats
Method: All Grain
Style: Robust Porter
Boil Time: 60 min
Batch Size: 5.5 gallons (fermentor volume)
Pre Boil Size: 7 gallons
Post Boil Size: 5.5 gallons
Pre Boil Gravity: 1.047 (recipe based estimate)
Post Boil Gravity: 1.059 (recipe based estimate)
Efficiency: 68% (brew house)
Source: Darrin Downs
Calories: 193 calories (Per 12oz)
Carbs: 17.3 g (Per 12oz)
Created: Sunday February 22nd 2026
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Fermentables
Amount Fermentable Cost PPG °L Bill %
11.50 lb Briess - Pale Ale Malt 2-Row11.5 lb Pale Ale Malt 2-Row 36.8 3.5 86%
10 oz American - Caramel / Crystal 80L10 oz Caramel / Crystal 80L 33 80 4.7%
1 lb American - Chocolate1 lb Chocolate 29 350 7.5%
4 oz American - Midnight Wheat Malt4 oz Midnight Wheat Malt 33 550 1.9%
13.37 lbs / $ 0.00
 
Hops
Amount Variety Cost Type AA Use Time IBU Bill %
0.50 oz Chinook0.5 oz Chinook Hops Leaf/Whole 11.4 Boil 60 min 18.44 25%
0.50 oz Chinook0.5 oz Chinook Hops Leaf/Whole 11.4 Boil 15 min 9.15 25%
1 oz Cascade1 oz Cascade Hops Leaf/Whole 7 Boil 15 min 11.24 50%
2 oz / $ 0.00
 
Other Ingredients
Amount Name Cost Type Use Time
4 oz Cocao Nibs Spice Secondary 0 min.
2 each Vanilla Bean Spice Secondary 0 min.
1 each Whirlfloc Water Agt Boil 10 min.
 
Yeast
Mangrove Jack - Californian Lager M54
Amount:
1 Each
Cost:
Attenuation (avg):
79.5%
Flocculation:
Med-High
Optimum Temp:
64 - 68 °F
Starter:
No
Fermentation Temp:
60 °F
Pitch Rate:
0.5 (M cells / ml / ° P) 151 B cells required
$ 0.00 Yeast Pitch Rate and Starter Calculator
Priming
CO2 Level: 1.9 Volumes
 
Target Water Profile
Home
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
5.02 gal Strike 166 °F 152 °F 60 min
3.78 gal Batch Sparge -- 170 °F 10 min
Starting Mash Thickness: 1.5 qt/lb
Starting Grain Temp: 45 °F
Quick Water Requirements
Water Gallons  Quarts
Strike water volume at mash thickness of 1.5 qt/lb 5.02 20.1  
Mash volume with grains 6.09 24.3  
Grain absorption losses -1.67 -6.7  
Remaining sparge water volume (equipment estimates 3.98 g | 15.9 qt) 3.91 15.6  
Mash Lauter Tun losses -0.25 -1  
Pre boil volume (equipment estimates 7.08 g | 28.3 qt) 7 28  
Boil off losses -1.5 -6  
Hops absorption losses (first wort, boil, aroma) -0.08 -0.3  
Post boil Volume 5.5 22  
Going into fermentor 5.5 22  
Total: 8.92 35.7
Equipment Profile Used: System Default
"Old Dirty Bastard" Robust Porter beer recipe by Darrin Downs. All Grain, ABV 6.34%, IBU 38.82, SRM 36.33, Fermentables: (Pale Ale Malt 2-Row, Caramel / Crystal 80L, Chocolate, Midnight Wheat Malt) Hops: (Chinook, Cascade) Other: (Cocao Nibs, Vanilla Bean, Whirlfloc)
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  • Public: Yup, Shared
  • Last Updated: 2026-02-23 03:36 UTC