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Kolschish RAGBRAI 2025

147 calories 12.9 g 12 oz
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Beer Stats
Method: All Grain
Style: Kölsch
Boil Time: 60 min
Batch Size: 5.3 gallons (fermentor volume)
Pre Boil Size: 6.625 gallons
Post Boil Size: 5.55 gallons
Pre Boil Gravity: 1.038 (recipe based estimate)
Post Boil Gravity: 1.045 (recipe based estimate)
Efficiency: 69% (brew house)
Source: BrewMaster RRB
Hop Utilization: 98%
Calories: 147 calories (Per 12oz)
Carbs: 12.9 g (Per 12oz)
Created: Thursday June 26th 2025
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6.42
 
Fermentables
Amount Fermentable Cost PPG °L Bill %
2.50 lb Viking - Pilsner Zero Malt2.5 lb Pilsner Zero Malt 37 1.9 26.3%
3.50 lb Briess - Brewers Malt 2-Row3.5 lb Brewers Malt 2-Row $ 0.98 / lb
$ 3.43 		37 1.8 36.8%
1 lb Thomas Fawcett - Pearl Pale Ale Malt1 lb Pearl Pale Ale Malt 36.8 2.65 10.5%
0.50 lb Briess - Blonde RoastOat Malt0.5 lb Blonde RoastOat Malt 34.5 6 5.3%
0.25 lb Briess - Carapils Malt0.25 lb Carapils Malt 34.5 1.5 2.6%
1.75 lb Briess - Pilsen Malt 2-Row1.75 lb Pilsen Malt 2-Row 37 1.2 18.4%
9.50 lbs / $ 3.43
 
Hops
Amount Variety Cost Type AA Use Time IBU Bill %
0.60 oz US Tettnang0.6 oz US Tettnang Hops Pellet 5 Boil 60 min 11.73 30%
0.40 oz Artisan - Hallertau Mittelfruh0.4 oz Hallertau Mittelfruh Hops Pellet 2 Boil 60 min 3.13 20%
0.20 oz US Tettnang0.2 oz US Tettnang Hops Pellet 5 Boil 12 min 1.64 10%
0.30 oz Artisan - Hallertau Mittelfruh0.3 oz Hallertau Mittelfruh Hops Pellet 2 Boil 12 min 0.98 15%
0.20 oz US Tettnang0.2 oz US Tettnang Hops Pellet 5 Boil 5 min 0.78 10%
0.30 oz Artisan - Hallertau Mittelfruh0.3 oz Hallertau Mittelfruh Hops Pellet 2 Boil 5 min 0.47 15%
2 oz / $ 0.00
 
Other Ingredients
Amount Name Cost Type Use Time
1.20 g Baking Soda Water Agt Mash 0 min.
2.20 g Gypsum Water Agt Mash 0 min.
3.50 g Calcium Chloride (dihydrate) Water Agt Mash 0 min.
5 ml Lactic acid Water Agt Mash 0 min.
0.70 g Gypsum Water Agt Sparge 0 min.
1.10 g Calcium Chloride (dihydrate) Water Agt Sparge 0 min.
1 ml Lactic acid Water Agt Mash 0 min.
 
Yeast
Fermentis - Safale - American Ale Yeast US-05
Amount:
1 Each
Cost:
$ 2.99 / each
$ 2.99
Attenuation (avg):
81%
Flocculation:
Medium
Optimum Temp:
54 - 77 °F
Starter:
No
Fermentation Temp:
68 °F
Pitch Rate:
0.75 (M cells / ml / ° P) 168 B cells required
$ 2.99 Yeast Pitch Rate and Starter Calculator
Priming
Method: co2       Amount: 10.69 psi       Temp: 34 °F       CO2 Level: 2.65 Volumes
 
Target Water Profile
My Water Profile 1
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
5.5 gal Add Grains stir mash Strike 154 °F 146 °F 60 min
Slow temp rise over 10 min Decoction 146 °F 151 °F 20 min
Mash Decoction 151 °F 151 °F 40 min
Starting Mash Thickness: 1.2 qt/lb
Starting Grain Temp: 68 °F
Quick Water Requirements
Water Gallons  Quarts
Strike water volume at mash thickness of 1.2 qt/lb 2.85 11.4  
Mash volume with grains 3.61 14.4  
Grain absorption losses -1.19 -4.8  
Remaining sparge water volume (equipment estimates 5.46 g | 21.9 qt) 5.21 20.9  
Mash Lauter Tun losses -0.25 -1  
Pre boil volume (equipment estimates 6.88 g | 27.5 qt) 6.63 26.5  
Boil off losses -1.5 -6  
Hops absorption losses (first wort, boil, aroma) -0.08 -0.3  
Post boil Volume (equipment estimates 5.3 g | 21.2 qt) 5.55 22.2  
WARNING: Exceeded batch size - reduce boil size    
Going into fermentor (equipment estimates 5.55 g | 22.2 qt) 5.3 21.2  
Total: 8.06 32.3
Equipment Profile Used: System Default
"Kolschish RAGBRAI 2025" Kölsch beer recipe by BrewMaster RRB. All Grain, ABV 4.97%, IBU 18.73, SRM 3.6, Fermentables: (Pilsner Zero Malt, Brewers Malt 2-Row, Pearl Pale Ale Malt, Blonde RoastOat Malt, Carapils Malt, Pilsen Malt 2-Row) Hops: (US Tettnang, Hallertau Mittelfruh) Other: (Baking Soda, Gypsum, Calcium Chloride (dihydrate), Lactic acid)
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  • Last Updated: 2025-06-26 13:06 UTC