Kolsch Bock - Beer Recipe - Brewer's Friend

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Kolsch Bock

173 calories 14.9 g 12 oz
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Beer Stats
Method: All Grain
Style: Kölsch
Boil Time: 60 min
Batch Size: 5.5 gallons (fermentor volume)
Pre Boil Size: 6.6 gallons
Post Boil Size: 6 gallons
Pre Boil Gravity: 1.048 (recipe based estimate)
Post Boil Gravity: 1.053 (recipe based estimate)
Efficiency: 77% (brew house)
Hop Utilization: 98%
Calories: 173 calories (Per 12oz)
Carbs: 14.9 g (Per 12oz)
Created: Wednesday July 15th 2020
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Fermentables
Amount Fermentable Cost PPG °L Bill %
9.50 lb German - Pilsner9.5 lb Pilsner 38 1.6 96%
0.40 lb German - Vienna0.4 lb Vienna 37 4 4%
9.90 lbs / $ 0.00
 
Hops
Amount Variety Cost Type AA Use Time IBU Bill %
3 oz Saaz3 oz Saaz Hops Pellet 2.8 Boil 60 min 29 100%
3 oz / $ 0.00
 
Other Ingredients
Amount Name Cost Type Use Time
2 g Gypsum Water Agt Mash 1 hr.
1 g Calcium Chloride (dihydrate) Water Agt Mash 1 hr.
5 ml Lactic acid Water Agt Mash 1 hr.
2 ml Lactic acid Water Agt Sparge 45 min.
1 each Whirlfloc Fining Boil 7 min.
 
Yeast
Wyeast - Kölsch 2565
Amount:
1 Each
Cost:
Attenuation (custom):
80%
Flocculation:
Low
Optimum Temp:
56 - 70 °F
Starter:
Yes
Fermentation Temp:
61 °F
Pitch Rate:
0.75 (M cells / ml / ° P) 205 B cells required
$ 0.00 Yeast Pitch Rate and Starter Calculator
Priming
CO2 Level: 0 Volumes
 
Target Water Profile
Balanced Profile
Ca+2 Mg+2 Na+ Cl- SO4-2 HCO3-
58.9 11 8 31.3 64.6 6.3
Cologne (boiled)
Ca 37
Mg 10
Na 25
SO4 70
Cl 35
HCO3 80
Mash Chemistry and Brewing Water Calculator
 
Mash Guidelines
Amount Description Type Start Temp Target Temp Time
4.26 gal Single infusion recirculating mash Infusion -- 149 °F 60 min
3.58 gal Fly sparge Sparge -- 174 °F 45 min
Starting Mash Thickness: 1.35 qt/lb
Quick Water Requirements
Water Gallons  Quarts
Strike water volume at mash thickness of 1.35 qt/lb 3.34 13.4  
Mash volume with grains 4.13 16.5  
Grain absorption losses -1.24 -5  
Remaining sparge water volume (equipment estimates 5.26 g | 21 qt) 4.75 19  
Mash Lauter Tun losses -0.25 -1  
Pre boil volume (equipment estimates 7.11 g | 28.5 qt) 6.6 26.4  
Boil off losses -1.5 -6  
Hops absorption losses (first wort, boil, aroma) -0.11 -0.5  
Post boil Volume (equipment estimates 5.5 g | 22 qt) 6 24  
WARNING: Exceeded batch size - reduce boil size    
Going into fermentor (equipment estimates 6 g | 24 qt) 5.5 22  
Total: 8.09 32.4
Equipment Profile Used: System Default
 
Notes
  • Brewed on 8/22/20
  • Mash water = 4.26 gallons (16.1 liters)
  • Sparge water = 3.58 gallons (13.6 liters)
  • Expecting pre-boil volume of 6.6 gallons (25 liters) or 6.86 gallons (25.9 liters) after 4% wort expansion, actually had 25.9 liters or 6.86 gallons.
  • Expecting mash efficiency of 83% (at expanded wort volume) which implies a pre boil gravity of 1.044. This is using grain father's mash efficiency calculator. Would be 80% on brewer's friend.
  • Mash temp settled right it at ~149F
  • Hit 12.0 plato pre boil gravity which converts to 1.048 vs. 1.044 target so 90% mash efficiency (87.6% on brewer's friend) vs. 83% expected.
  • Expecting to boil down to 6.0 gallons (after wort cools) so boil-off tool estimates 1.048 OG (now 1.053 with higher mash efficiency), Actual original gravity reading was 13.0 plato which converts to 1.053 vs 1.048 expected
  • After boil had ~6.21 gallons [23.5 liters] (expected 6.0 not expanded, 6.26 expanded) in the kettle and ~5.75 gallons made it into the fermenter.
  • Pitched yeast starter and set fermentation chamber at 61F, then slowly started ramping up on day 5 (Thursday night, Saturday brewday).
  • Packaged on 9/5/20, batch #46, FG was 1.008 (at 69F) which converts to 1.009 so 80% attenuation vs 75% avg. and 76% expected
  • Fill keg to 51.82 pounds = (1.009FG x 8.345 x 5 gallons) + 9.72 (empty keg weight + packaging hoses attached). Easily got 51.82 pounds.
  • Turned out stronger than style. So calling this one a Kolsch Bock.
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  • Last Updated: 2020-09-05 21:32 UTC