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Old Collusion

Method: Extract
Style: Imperial Stout
Boil Time: 60 min
Batch Size: 5.5 gallons (fermentor volume)
Pre Boil Size: 3 gallons
Pre Boil Gravity: 1.160 (recipe based estimate)
Efficiency: 35% (steeping grains only)
Source: drhbrews
Calories: 290 calories (Per 12oz)
Carbs: 29.9 g (Per 12oz)

Created: Wednesday October 4th 2017

Original Gravity:

1.087

Final Gravity:

1.022

ABV (standard):

8.5%

IBU (tinseth):

51.7

SRM (morey):

33.6

Mash pH

4.1

Cost $

n/a

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Fermentables

Amount	Fermentable	PPG	°L	Bill %
10.50 lb	Dry Malt Extract - Light10.5 lb Dry Malt Extract - Light	42	4	80%
0.25 lb	Brown Sugar0.25 lb Brown Sugar	45	15	1.9%
10.75 lbs / $ 0.00

Steeping Grains

Amount	Fermentable	PPG	°L	Bill %
0.50 lb	American - Caramel / Crystal 120L0.5 lb Caramel / Crystal 120L	33	120	3.8%
0.50 lb	American - Chocolate0.5 lb Chocolate	29	350	3.8%
0.25 lb	American - Roasted Barley0.25 lb Roasted Barley	33	300	1.9%
0.50 lb	German - CaraAroma0.5 lb CaraAroma	34	130	3.8%
0.50 lb	United Kingdom - Brown0.5 lb Brown	32	65	3.8%
0.13 lb	American - Black Malt0.125 lb Black Malt	28	500	1%
$ 0.00

Hops

Amount	Variety	Type	AA	Use	Time	IBU	Bill %
3 oz	Tettnanger3 oz Tettnanger Hops	Pellet	4.5	Boil	5 min	3.47	37.5%
1 oz	Cluster1 oz Cluster Hops	Pellet	6.6	Boil	60 min	8.52	12.5%
4 oz	centennial4 oz centennial Hops	Pellet	7.7	Boil	60 min	39.75	50%
8 oz / $ 0.00

Show Summary View

Amount	Variety	IBU	Bill %
3 oz	Tettnanger (Pellet)	3.47	37.5%
1 oz	Cluster (Pellet)	8.52	12.5%
4 oz	centennial (Pellet)	39.75	50%
8 oz / $ 0.00

Other Ingredients

Amount	Name	Cost	Type	Use	Time
1 tsp	gypsum		Water Agt	Boil	1 hr.

Yeast

Wyeast - American Ale II 1272

Amount:	1 Each	Cost:
Attenuation (avg):	74%	Flocculation:	High
Optimum Temp:	60 - 72 °F	Starter:	No
Fermentation Temp:	67 °F	Pitch Rate:	0.35 (M cells / ml / ° P) 152 B cells required

$ 0.00 Yeast Pitch Rate and Starter Calculator

Priming

Method: corn sugar Amount: 3/4c

Target Water Profile

Kirkland WA 2019

Ca⁺²	Mg⁺²	Na⁺	Cl^-	SO₄^-2	HCO₃^-
0	0	0	0	0	0
kirkland tap + gypsum

Notes

Used as guide: Old Rasputin Clone recipe found at https://www.homebrewersassociation.org/homebrew-recipe/north-coast-old-rasputin-clone/

(10-6-2017) Activate smack-pack yeast ~3hr. Add yeast to cooled starter culture media (~iL water + 0.25 lb brown sugar + 0.25 DME; boiled and simmered 30min) in sterile 4L flask. Had ~7hr growth with occasional swirling before addition to cooled wort.

Steep grains at 66C for 30min, sparge with 77C water. Add Briess Golden Light DME (10.25 LB), bring to boil, add hops and gypsum at appropriate times. Cool wort, add to primary with remaining water, aerate, add yeast, and check with refractometer. Use one beer.net to convert Brix to OG.
Brix=17.5
OG=1.073 (lower than expected) =volume is may be closer to 6 gal than 5.5. Also not as black as I was shooting for. Next time don't steep in grain bag.

(10-11-17) Transfer to secondary. Brix = 11.8
(11-6-17) Brix =11.8 still. FG @ 1.031. ABV 5.5%. Fermentation stalled or original Brix not accurate due to insufficient mixing wort and remaining water. If OG was 1.087 (Brix of 20.6), then FG=1.023 and 8.4% ABV.

Bottled with ~1/2c corn sugar. Not enough room in carboy to fit all sugar solution I had planned (3/4c).
(1/14/18) ~9 weeks after bottling, it is now nicely carbonated with tan head.

Recipe Photos

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Last Updated: 2019-02-24 20:59 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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