Rock Hoppers Brew Club RHBC Logs 2008-2017 > Logs

Czech Dark Lager – All Grain GONE

Batch #:

2017-07

Batch Size:

5 gallons

Boil Time:

70 min

Brew Date:

November 11, 2017

Statistics

Target OG:

1.052 12.9° P

OG:

1.054 13.3° P

Target FG:

1.014 3.6° P

Color:

99 SRM

IBU:

26.1 Tinseth

BU/GU:

0.48

General Info

Co-brewed with Mike Bischoff - we each got a 5 gallon carboy

Malts and Grains

Amount	Malt/Grain	% of Grist
14.00 pounds	German Pilsen Malt (2-Row)	62.9%
6.00 pounds	German Light Munich Malt	27%
1.00 pounds	German Carafa II De-Husked Malt	4.5%
0.75 pounds	German CaraMunich Malt II	3.4%
0.50 pounds	British Pale Chocolate	2.2%
22.25 pounds	Total Grain Weight	100%

Non-Fermentables

Amount	Non-Fermentable	Time
0.25 tsp	Super-Moss	11 minutes

Hops

Amount	Hop	Time	Type	Use	Form	AA
3.00 ounces	Saaz	60 min	Bittering	Boil	Pellets	3.6%
2.50 ounces	Saaz	30 min	Bittering	Boil	Pellets	3.6%
5.50 ounces	Total Hop Weight

Yeasts

Name	Lab/Manufacturer	Product ID	Amount
German Lager	White Labs	WLP830	500 ml

Equipment Profile Converted Keg, 10 Gallon/38 Liter Cooler Mash Tun

Batch Size:

10.00 gallons

Boil Volume:

12.00 gallons

Evaporation Rate:

9.00% per hour

Typical Efficiency:

72%

Hop Utilization:

100%

Mash Tun Volume:

10.00 gallons

Mash Tun Weight:

9.00 pounds

Mash Tun Specific Heat:

0.30 cal/gram per °C

Mash Tun Dead Space:

0.80 gallons

Loss:

1.00 gallons

Notes:

Converted 15.5 gallon/59 liter keg boil kettle for full boil with a 10 gallon/38 liter cooler as a mash/lauter tun.

Mash Profile Single Decoction

Ideal Grain Temp:

72°F

Ideal Tun Temp:

72°F

Ideal Sparge Temp:

168°F

Ideal PH:

5.4

Notes:

Draw a part of the mash, let it rest for at least 10 minutes, and boil.

Mash Steps

#	Name	Type	Time	Temp.	Description
1	Protein Rest	Infusion	35 min.	122°F	Add water at 126 F
2	Saccharification	Decoction	45 min.	155°F	Decoct 44% of mash, rest for at least 10 minutes, and boil
3	Mash Out	Infusion	10 min.	168°F	Heat to 168° F / 75° C for at least 10 minutes

Water Profile Highlands Ranch, Colorado

Calcium:

31.4 ppm

Bicarbonate:

56.9 ppm

Sulfate:

41.1 ppm

Chloride:

0.9 ppm

Sodium:

27.0 ppm

Magnesium:

3.5 ppm

PH:

5.4

Notes:

Filtered through standard charcoal system.

Fermentation and Aging

Primary:

6 days @ 48° F

Secondary:

2 days @ 60° F

Bischwarz

Date Brewed:
Brewer/Assistant:

Brew Day Data

	Target	Actual	Notes
Strike Water Amount:	7.4
Strike Water Temperature:
Mash Temperature(s):
Mash Time:
Sparge Water Amount:	2.8
Sparge Water Temperature:
Pre-Boil Gravity:
Pre-Boil Amount:	5.5
Post-Boil Amount:	5
Boil Time:	70
OG:	1.054 / 13.3° P
Mash PH:
Boil PH:

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Log: Bischwarz

Czech Dark Lager – All Grain GONE

Statistics

General Info

Malts and Grains

Non-Fermentables

Hops

Yeasts

Equipment Profile Converted Keg, 10 Gallon/38 Liter Cooler Mash Tun

Mash Profile Single Decoction

Mash Steps

Water Profile Highlands Ranch, Colorado

Fermentation and Aging

Bischwarz

Brew Day Data

Scale Recipe

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