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Roelofs down the Isar

233 calories 19.9 g 12 oz
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Beer Stats
Method: All Grain
Style: Munich Dunkel
Boil Time: 75 min
Batch Size: 5.5 gallons (fermentor volume)
Pre Boil Size: 7.5 gallons
Post Boil Size: 5.75 gallons
Pre Boil Gravity: 1.054 (recipe based estimate)
Post Boil Gravity: 1.071 (recipe based estimate)
Efficiency: 70% (brew house)
Source: Craig Harrison
Calories: 233 calories (Per 12oz)
Carbs: 19.9 g (Per 12oz)
Created: Thursday April 9th 2026
1.071
1.012
7.7%
16.0
12.4
5.4
n/a
 
Fermentables
Amount Fermentable Cost PPG °L Bill %
15 lb Avangard - Light Munich15 lb Light Munich 37 8 100%
15 lbs / $ 0.00
 
Hops
Amount Variety Cost Type AA Use Time IBU Bill %
1.30 oz Hallertau Mittelfruh1.3 oz Hallertau Mittelfruh Hops Pellet 2.7 Boil 75 min 12.21 65%
0.70 oz Artisan - Hallertau Mittelfruh0.7 oz Hallertau Mittelfruh Hops Pellet 2.7 Boil 20 min 3.81 35%
2 oz / $ 0.00
 
Other Ingredients
Amount Name Cost Type Use Time
1 each Whirlfloc tablet Water Agt Boil 15 min.
1 tbsp Yeast Nutrient Other Boil 15 min.
6.37 ml Lactic acid Water Agt Mash 1 hr.
 
Yeast
Fermentis - Saflager - German Lager Yeast S-23
Amount:
1 Each
Cost:
Attenuation (avg):
82%
Flocculation:
High
Optimum Temp:
48 - 72 °F
Starter:
No
Fermentation Temp:
55 °F
Pitch Rate:
0.35 (M cells / ml / ° P) 126 B cells required
$ 0.00 Yeast Pitch Rate and Starter Calculator
Priming
Method: co2       Amount: 26.71 psi       Temp: 68 °F       CO2 Level: 2.44 Volumes
 
Target Water Profile
Munich (Dark Lager)
Ca+2 Mg+2 Na+ Cl- SO4-2 HCO3-
82 20 4 2 16 320
Mash Chemistry and Brewing Water Calculator
 
Mash Guidelines
Amount Description Type Start Temp Target Temp Time
5.6 gal Strike 165 °F 152 °F 60 min
4 gal Sparge 170 °F -- 15 min
Starting Mash Thickness: 1.5 qt/lb
Quick Water Requirements
Water Gallons  Quarts
Strike water volume at mash thickness of 1.5 qt/lb 5.63 22.5  
Mash volume with grains 6.83 27.3  
Grain absorption losses -1.88 -7.5  
Remaining sparge water volume (equipment estimates 3.95 g | 15.8 qt) 4 16  
Mash Lauter Tun losses -0.25 -1  
Pre boil volume (equipment estimates 7.45 g | 29.8 qt) 7.5 30  
Boil off losses -1.88 -7.5  
Hops absorption losses (first wort, boil, aroma) -0.08 -0.3  
Post boil Volume (equipment estimates 5.5 g | 22 qt) 5.75 23  
WARNING: Exceeded batch size - reduce boil size    
Going into fermentor (equipment estimates 5.75 g | 23 qt) 5.5 22  
Total: 9.63 38.5
Equipment Profile Used: System Default
"Roelofs down the Isar" Munich Dunkel beer recipe by Craig Harrison. All Grain, ABV 7.72%, IBU 16.02, SRM 12.36, Fermentables: (Light Munich) Hops: (Hallertau Mittelfruh) Other: (Whirlfloc tablet, Yeast Nutrient, Lactic acid)
Last Updated and Sharing
 
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  • Public: Yup, Shared
  • Last Updated: 2026-04-10 00:12 UTC