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Cossack Imperial stout System


Details

Beer Style
13F Russian Imperial Stout (BJCP)
Brewing Method
All grain 
Brew Type
Ale 
Recipe Efficiency
75%
Recipe Volume
5 gal 
Boil Volume
6.02 gal 
Boil Time
90 min 
Maximum Extract
623.0 points
Potential Extract
467.3 points (75% from recipe)
Anticipated OG
1.093 SG
Boil SG
1.078 SG (at start of boil)
Anticipated Color
53.6 SRM     
Estimated IBU
49.1 IBU
Estimated FG
1.025 SG
Estimated Alcohol
8.8 %abv
Fermentation
Primary 4 d, Secondary 7 d, and Lager 168 d
Mash
30 m @ 122 tempF, 30 m @ 158 tempF, and 10 m @ 168 tempF

Style Compliance

13F Russian Imperial Stout
Original Gravity
1.075-1.115 SG
Final Gravity
1.018-1.030 SG
Alcohol
8.0-12.0 %abv
Bitterness
50.0-90.0 IBU
Color
30.0-40.0 SRM
 
OG
1.093 SG
FG
1.025 SG
Alcohol
8.8 %abv
Bitterness
49.1 IBU Low
Color
53.6 SRM High
Overall Compliance: 60.0%

Fermentables

Name Amount Color Potential % Grist
Briess 2-Row 14 lbs 1.8 °L 37 ppg 81.2 %
Briess Roasted Barley 1 lbs 300.0 °L 33 ppg 5.8 %
Muntons Crystal 1 lbs 56.0 °L 33 ppg 5.8 %
Briess Black Barley 0.75 lbs 500.0 °L 32 ppg 4.3 %
Dingemans Chocolate 0.5 lbs 340.0 °L 30 ppg 2.9 %
Totals 17.2 lbs 623.0 points 100%

Fermentables

Name: Briess 2-Row
Amount: 14 lbs
Color: 1.8 °L
Potential: 37 ppg
% Grist81.2 %
Name: Briess Roasted Barley
Amount: 1 lbs
Color: 300.0 °L
Potential: 33 ppg
% Grist5.8 %
Name: Muntons Crystal
Amount: 1 lbs
Color: 56.0 °L
Potential: 33 ppg
% Grist5.8 %
Name: Briess Black Barley
Amount: 0.75 lbs
Color: 500.0 °L
Potential: 32 ppg
% Grist4.3 %
Name: Dingemans Chocolate
Amount: 0.5 lbs
Color: 340.0 °L
Potential: 30 ppg
% Grist2.9 %
Totals
Amount: 17.2 lbs
Potential: 623.0 points
% Grist: 100%

Hops

Hop Amount IBU When Time
Northern Brewer 1.00 oz @ 8.5 %AA (8.0 AAU) 25.1 (25.2 %) Boil 90 min
Golding 1.50 oz @ 5.0 %AA (7.5 AAU) 15.9 (17.0 %) Boil 30 min
Fuggle 1.00 oz @ 4.5 %AA (4.0 AAU) 7.5 (15.1 %) Boil 20 min
Fuggle 0.50 oz @ 4.5 %AA (2.0 AAU) 0.5 (2.1 %) Boil 2 min
Totals 4.0 oz
Hop: Northern Brewer
Amount: 1 oz
%AA: 8.5
When: Boil
Time: 90 min
Hop: Golding
Amount: 1.5 oz
%AA: 5.0
When: Boil
Time: 30 min
Hop: Fuggle
Amount: 1 oz
%AA: 4.5
When: Boil
Time: 20 min
Hop: Fuggle
Amount: 0.5 oz
%AA: 4.5
When: Boil
Time: 2 min
Totals
Amount: 4.0 oz

Yeast

Name Attenuation When
Wyeast 1084 Irish Ale 73 % Primary
Name: Wyeast 1084 Irish Ale
Attenuation: 73 %
When: Primary
 
 
 
Recipe Source: Douglas Taylor