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Imperial Stout #2 - 6gal

Method: All Grain
Style: Russian Imperial Stout
Boil Time: 60 min
Batch Size: 6 gallons (fermentor volume)
Pre Boil Size: 9.48 gallons
Post Boil Size: 8 gallons
Pre Boil Gravity: 1.079 (recipe based estimate)
Post Boil Gravity: 1.093 (recipe based estimate)
Efficiency: 62% (brew house)
Hop Utilization: 98%
Calories: 309 calories (Per 12oz)
Carbs: 30 g (Per 12oz)

Created: Saturday May 3rd 2025

Cigar City Hunahpu Clone

OG: 1.128 FG: 1.042 ABV: 11.3% IBU: 78

Cosmonaut Russian Imperial Stout

by Mad Rocket Scientist

OG: 1.113 FG: 1.028 ABV: 11.1% IBU: 76

Sapwood

by PJ Butcho

OG: 1.090 FG: 1.022 ABV: 8.9% IBU: 80

Original Gravity:

1.093

Final Gravity:

1.021

ABV (standard):

9.5%

IBU (tinseth):

89.9

SRM (morey):

50.0

Mash pH

n/a

Cost $

n/a

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Fermentables

Amount	Fermentable	PPG	°L	Bill %
1 kg	Simpsons - Roasted Barley1 kg Roasted Barley	28.52	600	9.3%
4.75 kg	Simpsons - Finest Pale Ale Maris Otter4.75 kg Finest Pale Ale Maris Otter	37	2.6	44.1%
0.25 kg	Dingemans - Special B0.25 kg Special B	33.1	125	2.3%
0.50 kg	Flaked Corn0.5 kg Flaked Corn	40	0.5	4.6%
0.28 kg	Weyermann - Vienna Malt0.28 kg Vienna Malt	37	3.5	2.6%
0.50 kg	Thomas Fawcett - Pale Chocolate Malt0.5 kg Pale Chocolate Malt	32.2	230	4.6%
0.50 kg	Weyermann - Caramunich Type 30.5 kg Caramunich Type 3	34	57	4.6%
0.75 kg	Corn Sugar - Dextrose0.75 kg Corn Sugar - Dextrose	42	0.5	7%
0.25 kg	Simpsons - Chocolate Malt0.25 kg Chocolate Malt	31.7	444	2.3%
2 kg	Rahr - Standard 2-Row2 kg Standard 2-Row	36.8	1.8	18.6%
10.78 kg / $ 0.00

Hops

Amount	Variety	Type	AA	Use	Time	IBU	Bill %
2 oz	Magnum2 oz Magnum Hops	Pellet	12.3	Boil	60 min	59.1	33.3%
2 oz	East Kent Goldings2 oz East Kent Goldings Hops	Pellet	6.5	Boil	20 min	18.92	33.3%
2 oz	Fuggles2 oz Fuggles Hops	Pellet	6.8	Boil	10 min	11.85	33.3%
6 oz / $ 0.00

Show Summary View

Amount	Variety	IBU	Bill %
2 oz	Magnum (Pellet)	59.1	33.3%
2 oz	East Kent Goldings (Pellet)	18.92	33.3%
2 oz	Fuggles (Pellet)	11.85	33.3%
6 oz / $ 0.00

Mash Guidelines

Amount	Description	Type	Start Temp	Target Temp	Time
9.59 gal		Strike	162 °F	152 °F	1 min
		Vorlauf	152 °F	152 °F	60 min
	Second rest	Vorlauf	152 °F	163 °F	15 min
	Mashout	Vorlauf	163 °F	170 °F	15 min
4 gal		Fly Sparge	170 °F	170 °F	30 min
Starting Mash Thickness: 1.6 qt/lb Starting Grain Temp: 69 °F

Yeast

Imperial Yeast - A01 House

Amount:	1 Each	Cost:
Attenuation (avg):	73%	Flocculation:	High
Optimum Temp:	62 - 70 °F	Starter:	Yes
Fermentation Temp:	68 °F	Pitch Rate:	0.35 (M cells / ml / ° P) 177 B cells required

$ 0.00 Yeast Pitch Rate and Starter Calculator

Priming

CO₂ Level: 1.65 Volumes

Target Water Profile

Balanced Profile

Ca⁺²	Mg⁺²	Na⁺	Cl^-	SO₄^-2	HCO₃^-
0	0	0	0	0	0
Mash Chemistry and Brewing Water Calculator

Last Updated and Sharing

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Brews

Public: Yup, Shared
Last Updated: 2025-05-05 00:53 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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