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Alt School Cool

208 calories 15.8 g 12 oz
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Beer Stats
Method: BIAB
Style: Altbier
Boil Time: 60 min
Batch Size: 5.5 gallons (fermentor volume)
Pre Boil Size: 7.1 gallons
Post Boil Size: 6.1 gallons
Pre Boil Gravity: 1.055 (recipe based estimate)
Post Boil Gravity: 1.064 (recipe based estimate)
Efficiency: 70% (brew house)
Source: Brewmasterjohn
Calories: 208 calories (Per 12oz)
Carbs: 15.8 g (Per 12oz)
Created: Tuesday November 18th 2025
1.064
1.008
7.3%
29.4
11.6
5.4
n/a
 
Fermentables
Amount Fermentable Cost PPG °L Bill %
5 lb American - Pilsner5 lb Pilsner 37 1.8 39.8%
5 lb Munich - Light 10L5 lb Munich - Light 10L 33 10 39.8%
8 oz German - CaraMunich III8 oz CaraMunich III 34 57 4%
1 oz German - Carafa I1 oz Carafa I 32 340 0.5%
2 lb Cane Sugar2 lb Cane Sugar 46 0 15.9%
12.56 lbs / $ 0.00
 
Hops
Amount Variety Cost Type AA Use Time IBU Bill %
1 oz Spalt1 oz Spalt Hops Pellet 4.5 Boil at 212 °F 60 min 14.9 33.3%
1 oz Spalt1 oz Spalt Hops Pellet 4.5 Boil at 212 °F 30 min 11.45 33.3%
1 oz Spalt1 oz Spalt Hops Pellet 4.5 Hop Stand 0 min 3.06 33.3%
3 oz / $ 0.00
 
Other Ingredients
Amount Name Cost Type Use Time
6 g Baking Soda Water Agt Mash 1 hr.
4 g Calcium Chloride (anhydrous) Water Agt Mash 1 hr.
2 g Epsom Salt Water Agt Mash 1 hr.
2 g Gypsum Water Agt Mash 1 hr.
47.47 ml Phosphoric acid Water Agt Mash 1 hr.
0.50 tsp Yeast Nutrient Other Boil 10 min.
1 tsp Irish Moss Fining Boil 5 min.
 
Yeast
Fermentis - Safale - German Ale Yeast K-97
Amount:
1 Each
Cost:
Attenuation (avg):
81%
Flocculation:
High
Optimum Temp:
54 - 77 °F
Starter:
No
Fermentation Temp:
63 °F
Pitch Rate:
0.35 (M cells / ml / ° P) 114 B cells required
$ 0.00 Yeast Pitch Rate and Starter Calculator
Priming
Method: co2       Temp: 36 °F       CO2 Level: 2.65 Volumes
 
Target Water Profile
Düsseldorf (Altbier)
Ca+2 Mg+2 Na+ Cl- SO4-2 HCO3-
90 12 45 82 65 223
Mash Chemistry and Brewing Water Calculator
 
Mash Guidelines
Amount Description Type Start Temp Target Temp Time
8.4 gal Step Mash Infusion 157 °F 152 °F 60 min
Quick Water Requirements
Water Gallons  Quarts
Strike water volume (equipment estimates 8.54 g | 34.1 qt) 8.52 34.1  
Mash volume with grains (equipment estimates 9.38 g | 37.5 qt) 9.37 37.5  
Grain absorption losses -1.32 -5.3  
Mash Lauter Tun losses -0.25 -1  
Volume increase from sugar/extract (early additions) 0.15 0.6  
Pre boil volume (equipment estimates 7.11 g | 28.5 qt) 7.1 28.4  
Boil off losses -1.5 -6  
Hops absorption losses (first wort, boil, aroma) -0.08 -0.3  
Post boil Volume (equipment estimates 5.54 g | 22.2 qt) 6.1 24.4  
Hops absorption losses (whirlpool, hop stand) -0.04 -0.2  
WARNING: Exceeded batch size - reduce boil size    
Volume into fermentor (equipment estimates 6.06 g | 24.3 qt) 5.5 22  
Total: 8.52 34.1
Equipment Profile Used: System Default
 
Notes

Mash Schedule

Step Mash
135 for 15 mins (Protein Rest)
152 for 60 mins

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  • Last Updated: 2025-12-02 13:03 UTC