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Flekovský Clone (Tmavé Pivo)

Method: All Grain
Style: Czech Dark Lager
Boil Time: 75 min
Batch Size: 5.5 gallons (fermentor volume)
Pre Boil Size: 7.25 gallons
Post Boil Size: 6 gallons
Pre Boil Gravity: 1.042 (recipe based estimate)
Post Boil Gravity: 1.054 (recipe based estimate)
Efficiency: 82% (brew house)
Source: Jody Hughes
No Chill: 15 minute extended hop boil time
Hop Utilization: 93%
Calories: 180 calories (Per 12oz)
Carbs: 20.4 g (Per 12oz)

Created: Thursday May 1st 2025

Crow's Caw Kölsch

by bhive01

OG: 1.058 FG: 1.014 ABV: 5.8% IBU: 23

Original Gravity:

1.054

Final Gravity:

1.016

ABV (alternate):

5.1%

IBU (tinseth):

25.7

SRM (morey):

23.6

Mash pH

5.3

Cost $

59.17

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Fermentables

Amount	Fermentable	Cost	PPG	°L	Bill %
5 lb	Weyermann - Floor-Malted Bohemian Pilsner5 lb Floor-Malted Bohemian Pilsner	$ 3.74 / lb $ 18.70	36.3	1.9	50%
3 lb	Weyermann - Munich Type I3 lb Munich Type I	$ 3.99 / lb $ 11.97	38	6	30%
1 lb	Weyermann - Caramunich Type 21 lb Caramunich Type 2	$ 2.91 / lb $ 2.91	34	45	10%
0.50 lb	Weyermann - Caramunich Type 30.5 lb Caramunich Type 3	$ 3.07 / lb $ 1.54	34	57	5%
0.50 lb	Weyermann - Carafa II0.5 lb Carafa II - (late mash tun addition)	$ 3.32 / lb $ 1.66	31.5	415	5%
10 lbs / $ 36.78

Hops

Amount	Variety	Cost	Type	AA	Use	Time	IBU	Bill %
1 oz	Brewmaster - Czech Saaz1 oz Czech Saaz Hops	$ 2.49 / oz $ 2.49	Pellet	2.8	First Wort	80 min	11.08	28.6%
2.50 oz	Brewmaster - Czech Saaz2.5 oz Czech Saaz Hops	$ 2.49 / oz $ 6.23	Pellet	2.8	Boil	5 min	14.6	71.4%
3.50 oz / $ 8.72

Show Summary View

Amount	Variety	Cost	IBU	Bill %
3.50 oz	Brewmaster - Czech Saaz (Pellet)	$ 2.49 / oz $ 8.71	25.68	100%
3.50 oz / $ 8.71

Mash Guidelines

Amount	Description	Type	Start Temp	Target Temp	Time
3.4 gal	Protein rest	Strike	136 °F	127 °F	15 min
	Remove 1.5 gallons - 10 min to heat to 158F and rest 15 min. 25 minutes to heat to boil, boil 10 min. Return to mash.	Decoction	126 °F	158 °F	60 min
	Remove 1.5 gallons - 30 min to heat to boil, and boil 10, return to mash, to heat to 170F	Decoction	155 °F	212 °F	40 min
5.5 gal	Adding about 0.4 gallons to sparge to ensure stable grain bed in MLT.	Sparge	185 °F	170 °F	35 min
Starting Mash Thickness: 1.35 qt/lb Starting Grain Temp: 65 °F

Other Ingredients

Amount	Name	Cost	Type	Use	Time
4 g	Gypsum		Water Agt	Boil	15 min.
3 g	Yeast Nutrient	$ 0.12 / g $ 0.36	Fining	Boil	10 min.
5 g	Chalk		Water Agt	Mash	140 min.
2 g	Epsom Salt		Water Agt	Mash	140 min.
1 g	Magnesium Chloride		Water Agt	Mash	140 min.
3.50 g	Citric acid		Water Agt	Mash	140 min.
1.50 g	Citric acid		Water Agt	Sparge	35 min.
4 g	Gypsum		Water Agt	Mash	1 hr.
$ 0.36

Yeast

Imperial Yeast - Imperial Yeast - L29 Lookr Czech Lager Yeast

Amount:	1 Each	Cost:	$ 13.32 / each $ 13.32
Attenuation (custom):	75%	Flocculation:	High
Optimum Temp:	50 - 58 °F	Starter:	Yes
Fermentation Temp:	52 °F	Pitch Rate:	1.5 (M cells / ml / ° P) 416 B cells required

$ 13.32 Yeast Pitch Rate and Starter Calculator

Priming

Method: co2 Amount: 10.74 psi Temp: 37 °F CO₂ Level: 2.5 Volumes

Target Water Profile

Christiansburg VA USA

Ca⁺²	Mg⁺²	Na⁺	Cl^-	SO₄^-2	HCO₃^-
35	15	4	7	25	95
Mash Chemistry and Brewing Water Calculator

Notes

Brewing for October local brew club competition.

Mash plan details:
Dough in @ 127F
Rest 15 min
Remove about 1.5 gallons from mash, heat to 158F (est 15 min)
Rest decoction 10 min at 158F
Raise decoction temp to boil (est 20-25 min)
Boil 10 min, return to mash, should raise temp to ~155F
Rest mash for 15-30 min here.
Remove second decoction, heat to boil (est 25 min)
Boil 10 min, return to mash, should raise temp to mash out 170F
Add dark grains. Begin vorlauf.

Last Updated and Sharing

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Brews

Public: Yup, Shared
Last Updated: 2025-05-02 13:06 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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