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Bohemian Rapsobeer

Method: All Grain
Style: Bohemian Pilsener
Boil Time: 60 min
Batch Size: 28 liters (fermentor volume)
Pre Boil Size: 35 liters
Post Boil Size: 29 liters
Pre Boil Gravity: 1.042 (recipe based estimate)
Post Boil Gravity: 1.051 (recipe based estimate)
Efficiency: 90% (brew house)
Hop Utilization: 99%
Calories: 155 calories (Per 330ml)
Carbs: 14.3 g (Per 330ml)

Created: Monday November 3rd 2025

Czecz Pilsner Magnum Saaz

by Three Monkeys craft beer

OG: 1.044 FG: 1.009 ABV: 4.6% IBU: 43

Original Gravity:

1.051

Final Gravity:

1.010

ABV (standard):

5.3%

IBU (tinseth):

42.5

SRM (morey):

3.1

Mash pH

5.8

Cost $

n/a

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Brew Log History

Target 10°C
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Carbs: {{ stats.carbs | number:1 }} g / 330ml

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Device Filter
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Fermentables

Amount	Fermentable	PPG	°L	Bill %
0.40 kg	Weyermann - Carapils0.4 kg Carapils	34.5	2.1	8%
4.60 kg	Sladovny - CZ - Sladovny - Floor Malted Pilsen	38	1.9	92%
5 kg / $ 0.00

Hops

Amount	Variety	Type	AA	Use	Time	IBU	Bill %
70 g	Saaz70 g Saaz Hops	Pellet	2.92	Boil	60 min	19.72	31.8%
60 g	Saaz60 g Saaz Hops	Pellet	3.3	Boil	30 min	14.68	27.3%
50 g	Saaz50 g Saaz Hops	Pellet	3.3	Boil	10 min	5.77	22.7%
40 g	Saaz40 g Saaz Hops	Leaf/Whole	3.3	Whirlpool	0 min	2.36	18.2%
220 g / $ 0.00

Show Summary View

Amount	Variety	IBU	Bill %
70 g	Saaz (Pellet) 70 g Saaz (Pellet) Hops	19.72	31.8%
110 g	Saaz (Pellet) 110 g Saaz (Pellet) Hops	20.45	50%
40 g	Saaz (Leaf/Whole) 40 g Saaz (Leaf/Whole) Hops	2.36	18.2%
220 g / $ 0.00

Mash Guidelines

Amount	Description	Type	Start Temp	Target Temp	Time
19 L	Strike	Strike	68 °C	63 °C	--
	Beta Amylase Rest	Infusion	63.5 °C	63.5 °C	60 min
	Alpha Amylase Rest	Infusion	63.5 °C	72 °C	30 min
	Mash-Out	Temperature	72 °C	78 °C	15 min
Starting Mash Thickness: 3.8 L/kg Starting Grain Temp: 13 °C

Other Ingredients

Amount	Name	Type	Use	Time
0.04 g/l	Chalk	Water Agt	Mash	1 hr.
0.01 g/l	Calcium Chloride (dihydrate)	Water Agt	Mash	1 hr.
0.02 g/l	Epsom Salt	Water Agt	Mash	1 hr.
0 g/l	Salt	Water Agt	Mash	1 hr.
0 g/l	Baking Soda	Water Agt	Mash	1 hr.
10 ml	Biersol	Fining	Secondary	0 min.

Yeast

Mangrove Jack - Bohemian Lager Yeast M84

Amount:	1 Each	Cost:
Attenuation (avg):	78%	Flocculation:	High
Optimum Temp:	10 - 15 °C	Starter:	Yes
Fermentation Temp:	10 °C	Pitch Rate:	1.5 (M cells / ml / ° P) 530 B cells required

$ 0.00 Yeast Pitch Rate and Starter Calculator

Priming

CO₂ Level: 2.5 Volumes

Target Water Profile

Pilsen (Light Lager)

Ca⁺²	Mg⁺²	Na⁺	Cl^-	SO₄^-2	HCO₃^-
7	3	2	5	5	25
Mash Chemistry and Brewing Water Calculator

Last Updated and Sharing

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Brews

Public: Yup, Shared
Last Updated: 2026-02-22 11:45 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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Bohemian Rapsobeer

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