Imperial Porter Beer Recipe | All Grain Brown Porter by Andy Malcolm | Brewer's Friend
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Imperial Porter

301 calories 29.9 g 330 ml
Beer Stats
Method: All Grain
Style: Brown Porter
Boil Time: 90 min
Batch Size: 22 liters (fermentor volume)
Pre Boil Size: 28.1 liters
Post Boil Size: 23.5 liters
Pre Boil Gravity: 1.076 (recipe based estimate)
Post Boil Gravity: 1.097 (recipe based estimate)
Efficiency: 75% (brew house)
Source: Andy Malcolm
Calories: 301 calories (Per 330ml)
Carbs: 29.9 g (Per 330ml)
Created: Monday January 26th 2026
1.097
1.023
9.7%
28.0
35.9
5.0
n/a
 
Fermentables
Amount Fermentable Cost PPG °L Bill %
6.50 kg United Kingdom - Maris Otter Pale6.5 kg Maris Otter Pale 38 3.75 70.8%
1.20 kg Brown Malt1.2 kg Brown Malt 34 90.36 13.1%
0.85 kg American - Caramel / Crystal 75L0.85 kg Caramel / Crystal 75L 33 75 9.3%
0.13 kg American - Chocolate0.13 kg Chocolate 29 350 1.4%
0.25 kg Lyle - Black Treacle0.25 kg Black Treacle - (late boil kettle addition) 36 74.4 2.7%
0.25 kg GB - Invert Sugar No 30.25 kg Invert Sugar No 3 - (late boil kettle addition) 36 45.6 2.7%
9.18 kg / 0.00
 
Hops
Amount Variety Cost Type AA Use Time IBU Bill %
60 g Fuggles60 g Fuggles Hops Pellet 4.5 Boil 60 min 24.64 75%
20 g East Kent Goldings20 g East Kent Goldings Hops Pellet 5 Boil 10 min 3.31 25%
80 g / 0.00
 
Mash Guidelines
Amount Description Type Start Temp Target Temp Time
27.5 L Strike 70 °C 67 °C 60 min
7.5 L Batch Sparge 70 °C 67 °C --
Temperature 67 °C 75 °C 10 min
Starting Mash Thickness: 3 L/kg
 
Yeast
WHC Lab - British Pub Ale
Amount:
2 Each
Cost:
Attenuation (custom):
75%
Flocculation:
High
Optimum Temp:
-18 - -18 °C
Starter:
No
Fermentation Temp:
19 °C
Pitch Rate:
0.35 (M cells / ml / ° P) 178 B cells required
0.00 Yeast Pitch Rate and Starter Calculator
Priming
CO2 Level: 0 Volumes
 
Target Water Profile
Reverse Osmosis
Ca+2 Mg+2 Na+ Cl- SO4-2 HCO3-
0 0 0 0 0 0
Chalk 10
Baking Soda 4 (4-8)
Gypsum 2 (2-4)
Calcium Chloride 4 (10-15)
Epsom Salt 2 (2-4)
Mash Chemistry and Brewing Water Calculator
"Imperial Porter" Brown Porter beer recipe by Andy Malcolm. All Grain, ABV 9.7%, IBU 27.95, SRM 35.89, Fermentables: (Maris Otter Pale, Brown Malt, Caramel / Crystal 75L, Chocolate, Black Treacle, Invert Sugar No 3) Hops: (Fuggles, East Kent Goldings)
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  • Public: Yup, Shared
  • Last Updated: 2026-01-28 12:25 UTC
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