Rock Hoppers Brew Club RHBC Logs 2008-2017 > Logs > RHBC Imperial Stout [Imperial Stout]

Imperial Stout – All Grain GONE

Batch #:

36-2008

Batch Size:

5 gallons

Brew Date:

December 23, 2008

Tap Date:

June 1, 2010

Cost:

$25.10

Statistics

OG:

1.100 23.7° P

FG:

1.030 7.6° P

Real Extract:

10.5° P

Attenuation:

67.9% Apparent – 55.7% Real

Color:

76.5 SRM

IBU:

64.7

BU/GU:

0.65

ABV:

9.3%

ABW:

7.3%

Calories:

336 12 oz

General Info

Brewing this beer for the future. This one will be fermented as usual, but will be aged in the club’s oak barrel starting in April, 2008.

Comments

Final brew session of 2008. The thirty-sixth, which equals ~180 gallons of beer! Missed OG by .037 - don’t know where it went wrong, but it’s still a helluva big beer (December 23, 2008).

Primary fermentation produced a lot of karusen, so much so that there was a 1/2 inch of sediment on the bottom of the blowoff jug. Primary fermentation has slowed quite a bit, but I'll be keeping this in primary for at least a total of two weeks (January 1, 2008).

Malts and Grains

Amount	Malt/Grain	% of Grist
17.50 pounds	American Pale Malt (2-Row)	68.3%
2.00 pounds	Crystal Malt 120L	7.8%
2.00 pounds	Honey Malt	7.8%
2.00 pounds	American Victory Malt	7.8%
1.00 pounds	German Carafa III De-Husked Malt	3.9%
1.00 pounds	British Chocolate Malt	3.9%
0.13 pounds	Coffee Malt	0.5%
25.63 pounds	Total Grain Weight	100%

Non-Fermentables

Amount	Non-Fermentable	Time
0.25	Irish Moss	10 minutes

Hops

Amount	Hop	Time	Type	Use	Form	AA
2.00 ounces	Magnum	90 min	Bittering	Boil	Pellets	13.6%
0.75 ounces	Super Golding	30 min	Aroma	Boil	Pellets	7.0%
2.75 ounces	Total Hop Weight

Yeasts

Name	Lab/Manufacturer	Form	Amount
Nottingham	Danstar	Dry	3000 ml starter

Mash Infusion

Grain Amount:

25.63 pounds

PH:

5.2

Grain Temp:

40° F

Sparge Amount:

4.00 gallons

Tun Temp:

40° F

Step	Description	Temp.	Time
Infusion		152° F	90 min.
Sparge		170° F	30 min.

Procedure

Boil for 120 minutes.

Fermentation and Aging

Primary:

14 days @ 68° F

Secondary:

14 days @ 68° F

Age:

420 days @ 65° F

RHBC Imperial Stout

Date Brewed:
Brewer/Assistant:

Brew Day Data

	Target	Actual	Notes
Strike Water Amount:	8.5
Strike Water Temperature:
Mash Temperature(s):
Mash Time:
Sparge Water Amount:	2.4
Sparge Water Temperature:
Pre-Boil Gravity:
Pre-Boil Amount:	5.5
Post-Boil Amount:	5
Boil Time:	60
OG:	1.100 / 23.7° P
Mash PH:
Boil PH:

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Log: RHBC Imperial Stout