RUZA Russian Imperial Stout

From the BrewBlog of BorealBrewers – Grand Rapdis, Minnesota USA
Printed April 23, 2018

Style: Imperial Stout
Brewer: Chad Haatvedt
Brew Date: November 30, 2014
Yield: 7 gallons
Color (SRM/EBC): 75/147.8
Batch No: 2014-11-30
OG: 1.095
Target OG: 1.100
Status: Primary
BJCP Style Info: Imperial Stout
O.G.: 1.075 - 1.115
F.G.: 1.018 - 1.030
ABV: 8.0 - 12.0%
Bitterness: 50 - 90 IBUs
Color: 30 - 40 SRM
Info: An intensely flavored, big, dark ale. Roasty, fruity, and bittersweet, with a noticeable alcohol presence. Dark fruit flavors meld with roasty, burnt, or almost tar-like sensations. Like a black barleywine with every dimension of flavor coming into play.

Commercial Examples: Three Floyd’s Dark Lord, Bell’s Expedition Stout, North Coast Old Rasputin Imperial Stout, Stone Imperial Stout, Samuel Smith Imperial Stout, Scotch Irish Tsarina Katarina Imperial Stout, Thirsty Dog Siberian Night, Deschutes The Abyss, Great Divide Yeti, Southampton Russian Imperial Stout, Rogue Imperial Stout, Bear Republic Big Bear Black Stout, Great Lakes Blackout Stout, Avery The Czar, Founders Imperial Stout, Victory Storm King, Brooklyn Black Chocolate Stout.

General Information
Method: All Grain
6.00 pounds DME - Light 19.7% of grist
6.00 pounds Total Extract Weight 19.7% of grist
Malts and Grains
16.00 pounds American Pale Malt (2-Row) 52.5% of grist
2.00 pounds Crystal Malt 120L 6.6% of grist
1.00 pounds Crystal Malt 10L 3.3% of grist
1.00 pounds Crystal Malt 60L 3.3% of grist
0.50 pounds American Chocolate Malt 1.6% of grist
1.00 pounds American Black Patent 3.3% of grist
1.00 pounds American Dextrin (Cara-Pils) Malt 3.3% of grist
1.00 pounds Belgian Caravienne Malt 3.3% of grist
1.00 pounds Crystal Malt 20L 3.3% of grist
24.50 pounds Total Grain Weight 80.3% of grist
1.00 pounds Flaked Oats  
2 tbsp 5.2 Stabilizer @ mash minutes  
1.00 ounces Galena 13% Pellets @ 60 minutes
Type: Bittering
Use: Boil
13 AAUs
2.00 ounces Williamette 5.44.5% Pellets @ 15 minutes
Type: Bittering
Use: Boil
10.9 AAUs
1.00 ounces Fuggle 4% Pellets @ 0 minutes
Type: Aroma
Use: Boil
4 AAUs
1.00 ounces Williamette 5.4% Pellets @ 0 minutes
Type: Aroma
Use: Boil
5.4 AAUs
5.00 ounces Total Hop Weight 33.3 AAUs
Total Boil Time: 70 minutes
Name: Safale English Ale
Manufacturer: Fermentis
Product ID: S-04
Type: Ale
Flocculation: Medium
Attenuation: 73%
Alcohol Tolerance: Medium
Temperature Range: 64–70°F
Amount: 24 gr
Mash Profile

Single Infusion Mash, Full Bodied Beer

Grain Temperature: 72°F Tun Temperature: 72°F
Sparge Temperature: 168°F PH: 5.4
PPG: 20.8 Efficiency: 63.8%

Mash profile for most well-modified malts.


# Name Type Time Temp. Description
1 Mash In Infusion 45 min. 158°F

Add 70% of mash water at 171° F / 77° C

2 Mash Out Infusion 10 min. 168°F

Add 30% of mash water at 197° F / 92° C




Special Procedures
Water Amounts Calculator
Target Final Boil Volume: 7 gallons  
Evaporation Rate: 1.5 gallons per hour  
Boil Time: 60 minutes  
Runoff Volume Needed: 8.75 gallons 7 gallons (final boil volume) ÷ 0.96 (cooling) + 1.5 gallons (boil evaporation)
Grain Amount: 24 pounds  
Grain Absorbtion: 4.8 gallons  
Total Water Needed: 13.55 gallons 8.75 gallons (runoff) + 4.8 gallons (grain absorbtion) + 0 gallons (equip. loss)
Mash Water Needed: 7.98 gallons based on 1.33 quarts per pound of grain
Sparge Water Needed: 6 gallons 12.55 gallons (total water) – 7.98 gallons (mash water)

Calculations derived from Ray Daniels' book Designing Great Beers.



Strike Water Temperature Calculator
Grain Weight: 24 pounds
Grain Temperature: 56° F
Strike Water Amount: 7 gallons
Target Mash Temperature: 158° F
Equipment Loss: 15° F
Strike Water Temperature: 190.5° F (175.5° F less 15° F equipment loss adjustment)

Calculations derived from the Brewing Techniques Troubleshooter, Vol. 4, No. 4 available here.


RUZA Russian Imperial Stout
Date Brewed:  
Brew Day Data
  Target Actual
Strike Water Amount: 8.1  
Strike Water Temperature:    
Mash Temperature:    
Mash Time:    
Sparge Water Amount: 7.1  
Sparge Water Temperature:    
Pre-Boil Gravity:    
Pre-Boil Amount: 9  
Post-Boil Amount: 7  
Boil Time: 70  
Original Gravity: 1.095 / 22.7° P  
Brew Day Notes

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