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Potsdamer Stange

Method: BIAB
Style: No Profile Selected
Boil Time: 75 min
Batch Size: 23 liters (fermentor volume)
Pre Boil Size: 29.03 liters
Post Boil Size: 25.13 liters
Pre Boil Gravity: 1.042 (recipe based estimate)
Post Boil Gravity: 1.048 (recipe based estimate)
Efficiency: 65% (brew house)
Source: Ras Tafaric
Calories: 158 calories (Per 12oz)
Carbs: 16.4 g (Per 12oz)

Created: Tuesday January 20th 2026

B_149_Lager

OG: 1.048 FG: 1.007 ABV: 5.4% IBU: 20

Original Gravity:

1.048

Final Gravity:

1.012

ABV (standard):

4.8%

IBU (tinseth):

19.2

SRM (morey):

4.1

Mash pH

5.4

Cost $

n/a

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Fermentables

Amount	Fermentable	PPG	°L	Bill %
3.90 kg	Weyermann - Barke Pilsner Malt3.9 kg Barke Pilsner Malt	37.03	1.75	69.9%
1.40 kg	Weyermann - Pale Wheat1.4 kg Pale Wheat	36	2	25.1%
192 g	Weyermann - Carahell192 g Carahell	34	10	3.4%
85 g	Weyermann - Acidulated85 g Acidulated	27	3.4	1.5%
5.58 kg / $ 0.00

Hops

Amount	Variety	Type	AA	Use	Time	IBU	Bill %
9 g	Yakima Valley Hops - Magnum9 g Magnum Hops	Pellet	13.2	First Wort	75 min	16.25	27.3%
24 g	Yakima Valley Hops - GR Tettnanger24 g GR Tettnanger Hops	Pellet	2.8	Boil	10 min	2.9	72.7%
33 g / $ 0.00

Show Summary View

Amount	Variety	IBU	Bill %
9 g	Yakima Valley Hops - Magnum (Pellet) 9 g Magnum (Pellet) Hops	16.25	27.3%
24 g	Yakima Valley Hops - GR Tettnanger (Pellet) 24 g GR Tettnanger (Pellet) Hops	2.9	72.7%
33 g / $ 0.00

Mash Guidelines

Amount	Description	Type	Start Temp	Target Temp	Time
33 L	Soak In	Strike	35 °C	35 °C	15 min
	15 @ 70C, 30 Boil Grains	Decoction	35 °C	35 °C	45 min
	Rest		35 °C	65 °C	15 min
	15min@70C, 30 min Boil Liquid		65 °C	65 °C	45 min
	Mash Out		--	75 °C	15 min

Other Ingredients

Amount	Name	Type	Use	Time
1.50 g	oxbloc	Water Agt	Mash	1 hr.
1 each	Whirlfloc	Water Agt	Boil	15 min.
4.20 g	Calcium Chloride (dihydrate)	Water Agt	Mash	1 hr.
4.40 g	Gypsum	Water Agt	Mash	1 hr.
0.70 g	Salt	Water Agt	Mash	1 hr.

Yeast

Imperial Yeast - G02 Kaiser

Amount:	1 Each	Cost:
Attenuation (avg):	73%	Flocculation:	Low
Optimum Temp:	13 - 18 °C	Starter:	Yes
Fermentation Temp:	11 °C	Pitch Rate:	0.35 (M cells / ml / ° P) 96 B cells required

$ 0.00 Yeast Pitch Rate and Starter Calculator

Priming

Method: co2 Amount: 2.23 bar Temp: 20 °C CO₂ Level: 2.8 Volumes

Target Water Profile

Meanbrews Festbier

Ca⁺²	Mg⁺²	Na⁺	Cl^-	SO₄^-2	HCO₃^-
50	2	8	75	75	0
Balance CL/S04 per Ras
Mash Chemistry and Brewing Water Calculator

Notes

From Homebrewtalk German Beer discussion by Ras Tafaric
https://homebrewtalk.com/threads/german-beers.738286/page-3

RO/YOS
Odd decoction: 70C rest for 15 min followed by 30 min boil
First decoction is mostly grain
Second decoction is mostly liquid

Pitch at 11C (52F) for one day, then ramp to 15 C (59F) over the next 4 days.

I'm pitching on 3 gal yeast cake of G02 from Cream Ale
Acid Malt for pH adj to 5.4

Last Updated and Sharing

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Brews

Public: Yup, Shared
Last Updated: 2026-01-20 18:38 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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