Rock Hoppers Brew Club RHBC Logs 2008-2017 > Logs

Bohemian Pilsener – All Grain GONE

Batch #:

01-2013

Batch Size:

10 gallons

Boil Time:

90 min

Conditioning:

Keg

Brew Date:

January 2, 2013

Tap Date:

February 16, 2013

Statistics

Target OG:

1.056 13.8° P

OG:

1.054 13.3° P

Target FG:

1.016 4.1° P

FG:

1.012 3.1° P

Real Extract:

4.9° P

Attenuation:

76.7% Apparent – 63.2% Real

Color:

3.2 SRM

IBU:

45.4 Rager

BU/GU:

0.84

ABV:

5.6%

ABW:

4.4%

Calories:

178 12 oz

Comments

Made a starter 4 days before brew day. Fed it with fresh wort twice times to build cell count.

7.5 gallons (40%) of water was RO to emulate Pilzen water profile.

Mashed in at 1:05 PM. First decoction at 1:45 PM, second decoction started at 2:30 PM. Saccharification rest started at 3:15 PM. Vorlauf at 3:45, sparge at 4:10 PM. Boil started at 5:02 PM, flame out at 6:40.

Protein rest temperature: 120°F. 1st saccharification rest temperature: 142°F. 2nd saccharification rest temperature: 158°F.

Mash PH: 5.4; Boil PH: 5.4.

Malts and Grains

Amount	Malt/Grain	% of Grist
19.00 pounds	German Pilsen Malt (2-Row)	90.5%
1.50 pounds	American Dextrin (Cara-Pils) Malt	7.1%
0.50 pounds	German Acidulated (Sauer) Malt	2.4%
21.00 pounds	Total Grain Weight	100%

Hops

Amount	Hop	Time	Type	Use	Form	AA
1.00 ounces	Saaz	90 min	Bittering	First Wort	Leaf	3.1%
0.75 ounces	Magnum	75 min	Bittering	Boil	Pellets	10.0%
3.00 ounces	Saaz	25 min	Flavor	Boil	Leaf	3.1%
2.50 ounces	Saaz	10 min	Aroma	Boil	Leaf	3.1%
2.50 ounces	Saaz	0 min	Aroma	Boil	Leaf	3.1%
9.75 ounces	Total Hop Weight

Yeasts

Name	Lab/Manufacturer	Product ID	Amount
Urquell Lager	Wyeast	2001	5000 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 Double Decoction

Ideal Grain Temp:

72°F

Ideal Tun Temp:

72°F

Ideal Sparge Temp:

168°F

Ideal PH:

5.4

Notes:

Draw some of the mash, rest, and boil. Add back to main mash.

Mash Steps

#	Name	Type	Time	Temp.	Description
1	Protein Rest	Infusion	35 min.	122°F	Add water at 126° F / 52° C
2	Saccharification	Decoction	20 min.	147°F	Decoct 30% of mash, rest for at least 10 minutes, and boil
3	Saccharification	Decoction	20 min.	158°F	Decoct 15% of mash, rest for at least 10 minutes, and boil
4	Mash Out	Infusion	10 min.	168°F	Heat to 168° F / 75° C for at least 10 minutes

Water Profile Pilsen, Czech Republic

Calcium:

7.0 ppm

Bicarbonate:

2.0 ppm

Sulfate:

5.0 ppm

Chloride:

5.0 ppm

Sodium:

15.0 ppm

Magnesium:

5.0 ppm

PH:

8.0

Notes:

Very soft water.

Fermentation and Aging

Primary:

24 days @ 50° F

Secondary:

2 days @ 60° F

Lager:

28 days @ 34° F

Czechmate

Date Brewed:
Brewer/Assistant:

Brew Day Data

	Target	Actual	Notes
Strike Water Amount:	7
Strike Water Temperature:
Mash Temperature(s):
Mash Time:
Sparge Water Amount:	8.5
Sparge Water Temperature:
Pre-Boil Gravity:
Pre-Boil Amount:	11
Post-Boil Amount:	10
Boil Time:	90
OG:	1.054 / 13.3° P
Mash PH:
Boil PH:

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Log: Czechmate

Bohemian Pilsener – All Grain GONE

Statistics

Comments

Malts and Grains

Hops

Yeasts

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

Mash Profile Double Decoction

Mash Steps

Water Profile Pilsen, Czech Republic

Fermentation and Aging

Czechmate

Brew Day Data

Scale Recipe

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