While I'm not a huge fan of imperial stouts I'd like to give one a try. I thought it might be fun to scale up the oatmeal stout recipe from Brewing Classic Styles and take a few liberties with it. What I'm not sure about is scaling specialty grains. If I double the grain bill do I really want to double all of the dark grains? I think with this I will take Gordon Strong's advice and cold steep the dark grains in an attempt to reduce harshness from them.
Here's what I've got so far:
BeerSmith 2 Recipe Printout -
http://www.beersmith.comRecipe: Argument From Authority
Brewer: Steve
Asst Brewer:
Style: Imperial Stout
TYPE: All Grain
Taste: (30.0)
Recipe Specifications
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Boil Size: 8.00 gal
Post Boil Volume: 6.50 gal
Batch Size (fermenter): 5.50 gal
Bottling Volume: 5.10 gal
Estimated OG: 1.106 SG (1.091 if 60% efficient)
Estimated FG:
1.029 SG 1.025 SG (1.022 if 60% efficent)
Estimated Color: 54.9 SRM
Estimated IBU: 74.3 IBUs
Brewhouse Efficiency: 70.00 %
Est Mash Efficiency: 79.5 %
Boil Time: 90 Minutes
Ingredients:
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Amt Name Type # %/IBU
16 lbs Pale Malt, Maris Otter (3.0 SRM) Grain 1 69.6 %
2 lbs Oats, Flaked, Toasted (1.0 SRM) Grain 2 8.7 %
1 lbs 8.0 oz Victory Malt (or biscuit) (Briess) (28.0 Grain 4 6.5 %
1 lbs Caramel/Crystal Malt - 80L (80.0 SRM) Grain 6 4.3 %
Cold Steep and add at 10 minutes:1 lbs 8.0 oz Chocolate Malt (350.0 SRM) Grain 3 6.5 %
1 lbs Black Barley (Stout) (500.0 SRM) Grain 5 4.3 %
28.00 g Northern Brewer [8.50 %] - First Wort 90 Hop 7 22.3 IBUs
42.00 g Magnum [12.10 %] - Boil 60.0 min Hop 8 40.5 IBUs
11.00 Items Fermcap-S (Boil 60.0 mins) Other 9 -
28.00 g Northern Brewer [8.50 %] - Boil 20.0 min Hop 10 11.5 IBUs
1.00 tsp Irish Moss (Boil 15.0 mins) Fining 11 -
5.50 tsp Yeast Nutrient (Boil 15.0 mins) Other 12 -
2.0 pkg Dry English Ale Yeast (White Labs #WLP007) Yeast 13 -
*** use 2 vials in a 1.5L starter with stir plate, per Mr Malty calculator
2.00 oz Oak Chips
Soaked in Irish Whiskey (Secon Flavor 15 -
Mash Schedule: My Mash/Sparge
Total Grain Weight: 23 lbs
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Name Description Step Temperat Step Time
Mash In Add 7.37 gal of water at 167.7 F 154.0 F 90 min
Sparge: Batch sparge with 2 steps (Drain mash tun, , 3.49gal) of 168.0 F water
Notes:
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