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JZ Fruh

155 calories 15.5 g 12 oz
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Beer Stats
Method: All Grain
Style: Kölsch
Boil Time: 90 min
Batch Size: 4.5 gallons (ending kettle volume)
Pre Boil Size: 6.32 gallons
Pre Boil Gravity: 1.033 (recipe based estimate)
Efficiency: 76.5% (ending kettle)
Source: David Rosenbaum
Calories: 155 calories (Per 12oz)
Carbs: 15.5 g (Per 12oz)
Created: Friday May 29th 2026
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Fermentables
Amount Fermentable Cost PPG °L Bill %
7.07 lb Weyermann - Barke Pilsner Malt7.07 lb Barke Pilsner Malt $ 0.72 / lb
$ 5.09 		37.03 1.75 95.3%
0.35 lb German - Vienna0.35 lb Vienna $ 1.80 / lb
$ 0.63 		37 4 4.7%
7.42 lbs / $ 5.72
 
Hops
Amount Variety Cost Type AA Use Time IBU Bill %
1.60 oz Hallertau Mittelfruh1.6 oz Hallertau Mittelfruh Hops Pellet 3.2 Boil 60 min 25.13 100%
1.60 oz / $ 0.00
 
Other Ingredients
Amount Name Cost Type Use Time
3 g Calcium Chloride (dihydrate) Water Agt Mash 1 hr.
2.47 g Gypsum Water Agt Mash 1 hr.
1.20 g Salt Water Agt Mash 1 hr.
0.10 g Baking Soda Water Agt Mash 1 hr.
0.75 tsp Irish Moss Fining Boil 15 min.
0.38 lb Rice Hulls Other Mash 0 min.
0.75 tsp Yeast Nutrient Other Boil 15 min.
Priming
Method: co2       Amount: 11.95 psi       Temp: 40 °F       CO2 Level: 2.47 Volumes
 
Target Water Profile
Light colored and malty
Ca+2 Mg+2 Na+ Cl- SO4-2 HCO3-
60 5 10 95 55 0
Mash Chemistry and Brewing Water Calculator
 
Mash Guidelines
Amount Description Type Start Temp Target Temp Time
3.2 gal Strike 163 °F 149 °F 90 min
3.4 gal Fly Sparge -- 168 °F 15 min
Starting Mash Thickness: 1.6 qt/lb
Starting Grain Temp: 68 °F
Quick Water Requirements
Water Gallons  Quarts
Strike water volume at mash thickness of 1.6 qt/lb 2.97 11.9  
Mash volume with grains 3.56 14.2  
Grain absorption losses -0.93 -3.7  
Remaining sparge water volume 4.53 18.1  
Mash Lauter Tun losses -0.25 -1  
Pre boil volume (equipment estimates 6.81 g | 27.2 qt) 6.32 25.3  
Boil off losses -2.25 -9  
Hops absorption losses (first wort, boil, aroma) -0.06 -0.2  
Post boil volume (equipment estimates 4.01 g | 16 qt) 4.5 18  
Estimated amount in fermentor 4.5 18  
Total: 7.5 30
Equipment Profile Used: System Default
"JZ Fruh" Kölsch beer recipe by David Rosenbaum. All Grain, ABV 4.74%, IBU 25.13, SRM 3.21, Fermentables: ( Barke Pilsner Malt, Vienna) Hops: (Hallertau Mittelfruh) Other: (Calcium Chloride (dihydrate), Gypsum, Salt, Baking Soda, Irish Moss, Rice Hulls, Yeast Nutrient)
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  • Public: Yup, Shared
  • Last Updated: 2026-05-29 19:03 UTC