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Dark Janus

226 calories 19.6 g 330 ml
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Beer Stats
Method: All Grain
Style: Trappist Single
Boil Time: 40 min
Batch Size: 12 liters (fermentor volume)
Pre Boil Size: 10 liters
Post Boil Size: 8 liters
Pre Boil Gravity: 1.070 (recipe based estimate)
Post Boil Gravity: 1.111 (recipe based estimate)
Efficiency: 85% (brew house)
Source: Polar Beer
Calories: 226 calories (Per 330ml)
Carbs: 19.6 g (Per 330ml)
Created: Thursday March 20th 2025
1.074
1.013
8.0%
27.9
21.5
n/a
n/a
 
Fermentables
Amount Fermentable Cost PPG °L Bill %
2,350 g Weyermann - Floor-Malted Bohemian Pilsner2350 g Floor-Malted Bohemian Pilsner 36.3 1.9 69%
85 g Simpsons - Brown Malt85 g Brown Malt 32 187.93 2.5%
33 g Crisp Malting - Dark Crystal Malt 24033 g Dark Crystal Malt 240 33.1 122 1%
33 g Simpsons - Chocolate Malt33 g Chocolate Malt 31.7 444 1%
99 g Dingemans - Special B99 g Special B 33.1 125 2.9%
170 g Simpsons - Heritage Crystal170 g Heritage Crystal 32 66 5%
500 g Brown Sugar500 g Brown Sugar - (late boil kettle addition) 45 15 14.7%
135 g Oat hulls135 g Oat hulls 0 0 4%
3,405 g / $ 0.00
 
Hops
Amount Variety Cost Type AA Use Time IBU Bill %
10 g Columbus10 g Columbus Hops Pellet 18 Boil 40 min 27.88 100%
10 g / $ 0.00
 
Yeast
Mangrove Jack - Belgian Abbey M47
Amount:
11 Grams
Cost:
Attenuation (avg):
75%
Flocculation:
Med-High
Optimum Temp:
18 - 25 °C
Starter:
No
Fermentation Temp:
23 °C
Pitch Rate:
0.35 (M cells / ml / ° P) 75 B cells required
$ 0.00 Yeast Pitch Rate and Starter Calculator
Priming
CO2 Level: 2.2 Volumes
 
Target Water Profile
Balanced Profile
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
7 L Strike 72 °C 64 °C 60 min
Starting Mash Thickness: 2.33 L/kg
Starting Grain Temp: 18 °C
Quick Water Requirements
Water Liters
Strike water volume at mash thickness of 2.3 L/kg 6.8
Mash volume with grains (equipment estimates 4.7 L) 8.7
Grain absorption losses -2.9
Remaining sparge water volume (equipment estimates 8.6 L) 7
Mash Lauter Tun losses -0.9
Pre boil volume (equipment estimates 11.5 L) 10
Volume increase from sugar/extract (late additions) 0.3
Boil off losses -3.8
Hops absorption losses (first wort, boil, aroma) -0.1
Post boil Volume 8
Top off amount 4
Going into fermentor 12
Total: 13.8  
Equipment Profile Used: System Default
"Dark Janus" Trappist Single beer recipe by Polar Beer. All Grain, ABV 7.96%, IBU 27.88, SRM 21.48, Fermentables: (Floor-Malted Bohemian Pilsner, Brown Malt, Dark Crystal Malt 240, Chocolate Malt, Special B, Heritage Crystal, Brown Sugar, Oat hulls) Hops: (Columbus)
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  • Last Updated: 2026-05-10 20:49 UTC