Askers Russian Imperial Stout

Imperial stout, also known as Russian imperial stout or imperial Russian stout, is a strong dark beer or stout in the style that was brewed in the 18th century by Thrale’s brewery in London for export to the court of Catherine II of Russia.[41] In 1781 the brewery changed hands and the beer became known as Barclay Perkins Imperial Brown Stout. When the brewery was taken over by Courage the beer was renamed Courage Imperial Russian Stout (IRS).[42] It has a high alcohol content, usually over 9% abv.
Source: Wikipedia

Recipe Details

Batch Size Boil Time IBU SRM Est. OG Est. FG ABV
5 L 60 min 123.3 IBUs 116.8 EBC 1.174 1.015 21.7 %
Actuals 1.046 1.01 4.7 %

Style Details

Name Cat. OG Range FG Range IBU SRM Carb ABV
Imperial Stout 13 F 1.075 - 1.115 1.018 - 1.03 50 - 90 59.1 - 78.8 1.8 - 2.6 8 - 12 %

Fermentables

Name Amount %
Pale Malt (2 Row) US 331.2 g 11.88
Caramel/Crystal Malt -120L 130.5 g 4.68
Roasted Barley (Thomas Fawcett) 130.5 g 4.68
Dark Dry Extract 646.1 g 23.17
Pale Liquid Extract 1.037 kg 37.2
Brown Sugar, Dark 256.3 g 9.19
Sugar, Table (Sucrose) 256.3 g 9.19

Hops

Name Amount Time Use Form Alpha %
Admiral 32.7 g 90 min First Wort Pellet 14.8

Yeast

Name Lab Attenuation Temperature
Super High Gravity Ale (WLP099) White Labs 82% 20.56°C - 23.33°C
London Ale (WLP013) White Labs 78% 18.89°C - 21.67°C

Mash

Step Temperature Time
Mash In 65°C 90 min

Fermentation

Step Time Temperature
Primary 4 days 19.44°C
Secondary 10 days 19.44°C
Aging 30 days 18.33°C