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Alt School Cool

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

Original Gravity:

1.064

Final Gravity:

1.008

ABV (standard):

7.3%

IBU (tinseth):

29.4

SRM (morey):

11.6

Mash pH

5.4

Cost $

n/a

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Fermentables

Amount	Fermentable	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	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

Show Summary View

Amount	Variety	Cost	IBU	Bill %
3 oz	Spalt (Pellet) 2.9999999931377 oz Spalt (Pellet) Hops		29.41	99.9%
3 oz / $ 0.00

Mash Guidelines

Amount	Description	Type	Start Temp	Target Temp	Time
8.4 gal	Step Mash	Infusion	157 °F	152 °F	60 min

Other Ingredients

Amount	Name	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

Notes

Mash Schedule

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

Last Updated and Sharing

Views

Brews

Public: Yup, Shared
Last Updated: 2025-12-02 13:03 UTC

Recipe costs can be adjusted by changing the batch size. They won't be saved but will give you an idea of costs if your final yield was different.

Cost for

Gallons

Cost by

Final Yield

	Cost $	Cost %
Fermentables	$
Steeping Grains (Extract Only)	$
Hops	$
Yeast	$
Other	$
Cost Per Barrel	$ 0.00
Cost Per Pint	$ 0.00
Total Cost	$ 0.00

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