2002-12-30 da Zoo Stout

A ProMash Brewing Session Report

Brewing Date: Monday December 30, 2002
Head Brewer: Fred Bonjour
Asst Brewer:   
Recipe: da Zoo Stout


BJCP Style and Style Guidelines
12-C Barleywine & Imperial Stout, Russian Imperial Stout

Min OG: 1.075 Max OG: 1.095   
Min IBU: 50 Max IBU: 90   
Min Clr: 20 Max Clr: 40  Color in SRM, Lovibond


Recipe Specifics
Batch Size (Gal): 6.00 Wort Size (Gal): 6.00
Total Grain (Lbs): 25.88      
Anticipated OG: 1.092 Plato: 22.09
Anticipated SRM: 68.4        
Anticipated IBU: 57.1      
Brewhouse Efficiency: 72  %   
Wort Boil Time: 60  Minutes   

Actual OG: 1.091 Plato: 21.74   
Actual FG: 1.041 Plato: 10.23   
Alc by Weight: 5.05 by Volume: 6.64 From Measured Gravities.
ADF: 52.9 RDF: 45.5 Apparent & Real Degree of Fermentation.

Actual Mash System Efficiency: 72 %
Anticipated Points From Mash: 92.41
Actual Points From Mash: 92.00


Grain/Extract/Sugar
% Amount Name Origin Potential SRM
52.2 13.50 lbs.  Briess Pale Malt America 1.037 4
20.3 5.25 lbs.  Flaked Barley America 1.032 2
13.5 3.50 lbs.  Briess Roasted Barley America 1.002 300
5.8 1.50 lbs.  Munich Malt(light) America 1.033 10
5.8 1.50 lbs.  Special B Malt Belgian 1.030 120
2.2 0.56 lbs.  Briess Black Malt America 1.002 500
0.3 0.07 lbs.  Licorice Stick    0.000 0

Potential represented as SG per pound per gallon.

Hops
Amount Name Form Alpha IBU Boil Time
0.75 oz.  Nugget Pellet 13.00 33.0 60 min
1.50 oz.  Fuggle Pellet 4.75 24.1 60 min


Yeast
Slant Kalamazoo Brewery Captured Sl


Mash Schedule
Rest Temp Time
Dough In: 171 0 Min
Saccharification Rest: 158 60 Min
Mash-out Rest: 170 10 Min
Sparge: 170 0 Min

Total Mash Volume Gal: 10.22 - After Additional Infusions

Runnings Stopped At: 1.010 SG 2.56 Plato

All temperature measurements are degrees Fahrenheit.


Mash Schedule


Fermentation Specifics
Original Gravity: 1.091 SG 21.74 Plato
Finishing Gravity: 1.041 SG 10.23 Plato



Tasting Notes
Roast is not as powerful as I thought it might be. Carol Anne thought it has possibilities, she doesn't generally like stouts.
This is a lot of Roast, but it works with the high (158F) mash, very well balanced at 5 months. Gravity was toward the high end, ABV toward the low end of the style. Add more base malt to bump the ABV.






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