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Course Maintenance

147 calories 12.7 g 16 oz
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Beer Stats
Method: BIAB
Style: Kölsch
Boil Time: 90 min
Batch Size: 5.5 gallons (fermentor volume)
Pre Boil Size: 6.29 gallons
Post Boil Size: 5.51 gallons
Pre Boil Gravity: 9.9 °P (recipe based estimate)
Post Boil Gravity: 11.3 °P (recipe based estimate)
Efficiency: 72% (brew house)
Calories: 147 calories (Per 16oz)
Carbs: 12.7 g (Per 16oz)
Created: Thursday December 26th 2024
11.3 °P
2.0 °P
4.9%
26.1
3.7
5.3
9.89
 
Fermentables
Amount Fermentable Cost PPG °L Bill %
7.50 lb Rahr - Old World Pilsner7.5 lb Old World Pilsner 36.3 1.75 78.9%
2 lb Viking - Vienna2 lb Vienna $ 1.70 / lb
$ 3.40 		37 3.6 21.1%
9.50 lbs / $ 3.40
 
Hops
Amount Variety Cost Type AA Use Time IBU Bill %
0.25 oz alora0.25 oz alora Hops Pellet 10.5 First Wort 60 min 11.71 25%
0.25 oz alora0.25 oz alora Hops Pellet 10.5 Boil 30 min 7.65 25%
0.25 oz alora0.25 oz alora Hops Pellet 10.5 Boil 15 min 4.94 25%
0.25 oz alora0.25 oz alora Hops Pellet 10.5 Whirlpool 10 min 1.79 25%
1 oz / $ 0.00
 
Other Ingredients
Amount Name Cost Type Use Time
2 g Calcium Chloride (anhydrous) Water Agt Mash 1 hr.
6.50 g Citric acid Water Agt Mash 1 hr.
2 g Epsom Salt Water Agt Mash 1 hr.
2 g Gypsum Water Agt Mash 1 hr.
2.23 g Citric acid Water Agt Sparge 1 hr.
 
Yeast
Fermentis - Safale - German Ale Yeast K-97
Amount:
1 Each
Cost:
$ 6.49 / each
$ 6.49
Attenuation (avg):
81%
Flocculation:
High
Optimum Temp:
54 - 77 °F
Starter:
No
Fermentation Temp:
62 °F
Pitch Rate:
0.75 (M cells / ml / ° P) 176 B cells required
$ 6.49 Yeast Pitch Rate and Starter Calculator
Priming
Method: co2       Amount: 24.31 psi       Temp: 55 °F       CO2 Level: 2.8 Volumes
 
Target Water Profile
Kolsch
Ca+2 Mg+2 Na+ Cl- SO4-2 HCO3-
90 10 15 50 70 0
Mash Chemistry and Brewing Water Calculator
 
Mash Guidelines
Amount Description Type Start Temp Target Temp Time
14.25 qt Strike 152 °F 147 °F 30 min
2.3 qt Temperature 212 °F 155 °F 30 min
3.5 gal Sparge 180 °F 170 °F --
Quick Water Requirements
Water Gallons  Quarts
Strike water volume (equipment estimates 9.23 g | 36.9 qt) 7.73 30.9  
Mash volume with grains (equipment estimates 9.99 g | 39.9 qt) 8.49 34  
Grain absorption losses -1.19 -4.8  
Mash Lauter Tun losses -0.25 -1  
Pre boil volume (equipment estimates 7.79 g | 31.2 qt) 6.29 25.2  
Boil off losses -2.25 -9  
Hops absorption losses (first wort, boil, aroma) -0.03 -0.1  
Post boil Volume 5.51 22  
Hops absorption losses (whirlpool, hop stand) -0.01 -0  
WARNING: Exceeded batch size - reduce boil size    
Volume into fermentor 5.5 22  
Total: 7.73 30.9
Equipment Profile Used: System Default
"Course Maintenance" Kölsch beer recipe by Brewer #436224. BIAB, ABV 4.94%, IBU 26.08, SRM 3.66, Fermentables: (Old World Pilsner, Vienna) Hops: (alora) Other: (Calcium Chloride (anhydrous), Citric acid, Epsom Salt, Gypsum)
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  • Last Updated: 2026-06-27 17:24 UTC