Open Back Dirty Porter Beer Recipe | All Grain Robust Porter | Brewer's Friend
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Open Back Dirty Porter

219 calories 22.2 g 12 oz
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Beer Stats
Method: All Grain
Style: Robust Porter
Boil Time: 60 min
Batch Size: 5 gallons (fermentor volume)
Pre Boil Size: 6.53 gallons
Pre Boil Gravity: 1.051 (recipe based estimate)
Post Boil Gravity: 1.066 (recipe based estimate)
Efficiency: 73% (brew house)
Source: Squishy Spizzirro
Calories: 219 calories (Per 12oz)
Carbs: 22.2 g (Per 12oz)
Created: Wednesday September 14th 2022
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Mexican Chocolate Porter

by fatmenbrews

OG: 1.058 FG: 1.016 ABV: 5.5% IBU: 41

1.066
1.016
6.6%
48.6
31.9
5.4
n/a
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Fermentables
Amount Fermentable Cost PPG °L Bill %
10 lb Great Western - Premium 2-Row10 lb Premium 2-Row 37 2 76.9%
1 lb Weyermann - Caramunich Type 11 lb Caramunich Type 1 33.5 35 7.7%
8 oz Bairds - Chocolate Malt8 oz Chocolate Malt 31 500 3.8%
6 oz American - Caramel / Crystal 120L6 oz Caramel / Crystal 120L 33 120 2.9%
2 oz Bairds - Roasted Barley2 oz Roasted Barley 33 600 1%
8 oz Rice Hulls8 oz Rice Hulls 0 0 3.8%
8 oz Aromatic Malt8 oz Aromatic Malt 35 20 3.8%
208 oz / $ 0.00
 
Hops
Amount Variety Cost Type AA Use Time IBU Bill %
1 oz Artisan - Northern Brewer1 oz Northern Brewer Hops Pellet 8.5 Boil 60 min 32.12 33.3%
1 oz Fuggles1 oz Fuggles Hops Pellet 4.5 Boil 30 min 13.07 33.3%
1 oz Fuggles1 oz Fuggles Hops Pellet 4.5 Boil 5 min 3.39 33.3%
3 oz / $ 0.00
 
Mash Guidelines
Amount Description Type Start Temp Target Temp Time
4.55 gal Strike 164 °F 152 °F 60 min
4.39 gal Batch Sparge 170 °F 152 °F --
Starting Mash Thickness: 1.33 qt/lb
Starting Grain Temp: 80 °F
 
Other Ingredients
Amount Name Cost Type Use Time
4 g Calcium Chloride (dihydrate) Water Agt Mash 1 hr.
4 g Gypsum Water Agt Mash 1 hr.
2 g Salt Water Agt Mash 1 hr.
 
Yeast
Wyeast - London Ale 1028
Amount:
2 Each
Cost:
Attenuation (avg):
75%
Flocculation:
Med-Low
Optimum Temp:
60 - 72 °F
Starter:
No
Fermentation Temp:
67 °F
Pitch Rate:
0.35 (M cells / ml / ° P) 107 B cells required
$ 0.00 Yeast Pitch Rate and Starter Calculator
Priming
CO2 Level: 1.9 Volumes
 
Target Water Profile
London (Porter, dark ales)
Ca+2 Mg+2 Na+ Cl- SO4-2 HCO3-
100 5 35 60 50 265
Mash Chemistry and Brewing Water Calculator
"Open Back Dirty Porter" Robust Porter beer recipe by Squishy Spizzirro. All Grain, ABV 6.62%, IBU 48.58, SRM 31.93, Fermentables: (Premium 2-Row, Caramunich Type 1, Chocolate Malt, Caramel / Crystal 120L, Roasted Barley, Rice Hulls, Aromatic Malt) Hops: (Northern Brewer, Fuggles) Other: (Calcium Chloride (dihydrate), Gypsum, Salt)
Recipe Picture
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  • Public: Yup, Shared
  • Last Updated: 2025-10-28 15:20 UTC
NEW Water Requirements:
Open Back Dirty Porter
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Open Back Dirty Porter
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Recipe Cost $ (USD)
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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