Rock Hoppers Brew Club RHBC Logs 2008-2017 > Logs > Humptoberfest [Oktoberfest/Marzen]

Oktoberfest/Marzen – Partial Mash GONE

Batch #:

26-2009

Batch Size:

5 gallons

Boil Time:

60 min

Conditioning:

Keg

Brew Date:

September 27, 2009

Tap Date:

December 5, 2009

Cost:

$23.00

Statistics

Target OG:

1.046 11.4° P

OG:

1.044 11° P

Reading 1:

1.014 3.6° P at 14 days

Target FG:

1.010 2.6° P

FG:

1.012 3.1° P

Real Extract:

4.5° P

Attenuation:

71.8% Apparent – 59.1% Real

Color:

11.6 SRM

IBU:

25.7 Rager

BU/GU:

0.58

ABV:

4.3%

ABW:

3.3%

Calories:

145 12 oz

General Info

This is a batch of Humptoberfest brewed to be blended with the prevous batch that did not attenuate enough. This one will be fermented with a HUGE starter of American Lager yeast (a very attenuative lager strain). After fermentation, it will be blended with 5 gallons of the previous batch.

Target FG for this batch: 1.010-1.012

Target FG for the blended batch: 1.013-1.014

Extract

Amount	Extract	% of Grist
3.75 pounds	LME - Light	44.1%
3.75 pounds	Total Extract Weight	44.1% of grist

Malts and Grains

Amount	Malt/Grain	% of Grist
1.50 pounds	German Dark Munich Malt	17.6%
1.50 pounds	American Vienna Malt	17.6%
1.50 pounds	German Melanoidin Malt	17.6%
0.25 pounds	Crystal Malt 60L	2.9%
4.75 pounds	Total Grain Weight	55.9%

Hops

Amount	Hop	Time	Type	Use	Form	AA
0.30 ounces	Magnum	60 min	Bittering	Boil	Pellets	15.1%
0.50 ounces	Mount Hood	30 min	Aroma	Boil	Pellets	5.2%
0.80 ounces	Total Hop Weight

Yeasts

Name	Lab/Manufacturer	Product ID	Amount
American Lager	White Labs	WLP840	2000 ml

Equipment Profile 5 Gallon/19 Liter Kettle

Batch Size:

5.00 gallons

Boil Volume:

4.00 gallons

Evaporation Rate:

9.00% per hour

Typical Efficiency:

72%

Hop Utilization:

100%

Mash Tun Volume:

5.00 gallons

Mash Tun Weight:

5.00 pounds

Mash Tun Specific Heat:

0.12 cal/gram per °C

Mash Tun Dead Space:

0.25 gallons

Loss:

0.25 gallons

Mash Profile Single Infusion Mash, Light Bodied Beer, No Mash Out

Ideal Grain Temp:

72°F

Ideal Tun Temp:

72°F

Ideal Sparge Temp:

168°F

Ideal PH:

5.4

Notes:

Mash profile for most well-modified malts.

Mash Steps

#	Name	Type	Time	Temp.	Description
1	Mash In	Infusion	75 min.	150°F	Add 100% of mash water at 162° F / 72° C

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:

14 days @ 52° F

Secondary:

2 days @ 62° F

Lager:

35 days @ 40° F

Humptoberfest

Date Brewed:
Brewer/Assistant:

Brew Day Data

	Target	Actual	Notes
Boil Time:	60
OG:	1.044 / 11° P
Mash PH:
Boil PH:

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Log: Humptoberfest