Brew #21 - Daril's Oatmeal Stout


8/8/98      Daril's Oatmeal Stout
  
   Category         :  Classic Dry Stout        
   Method           :  Full Mash
   Starting Gravity :  1.059
   Ending Gravity   :  1.015
   Alcohol content  :  5.7%
   Recipe Makes     : 12.0 gallons
   Total Grain      : 28.75 lbs.
   Color (srm)      : 87.3
   Efficiency       : 70%
   Hop IBUs         : 37.1

Malts/Sugars:
  3.00	lb.	Pearl Barley            
  3.00	lb.	Roast Barley     
 18.25	lb.	Briess Pale Ale - 2-Row  
  1.50	lb.	Cara-Pils        
  3.00	lb.	Oats (Raw Steel-Cut)            

Hops:
 3.00	oz.	East Kent Goldings	 6.5%	60 min

Boil temperature of water: 212F
Grain Starting Temperature: 70F
Desired Grain/Water Ratio: 1 quarts/pound
Strike Water:  7.19 gallons of water at 172F
First Mash Temperature: 154F

Notes:
GRIST: Target proportions (based on Keith Klemp's suggestions):
  65% Pale Malt     10% Roast Barley
  10% pearl/flaked barley   10% Oatmeal (raw steel cut or flaked)
  5% carapils 
     
ADDITIVES: 1 tsp. calcium chloride in the mash & in boil.

MASH: 154F for 2 hours  (OK range: 150-155F)

SPARGE water - 13 gallons+ @180F (allow for cooling to ~170F)

NOTE:  RAKE the top of the grain bed while sparging ... and
       SPARGE SLOWLY - remember extraction efficiency issues.
       This recipe is based on 70% efficiency.  If slower sparging
       and raking cause better extraction, then the final OG should
       be higher than 1057 (though max. for style should be 1048)

Sparge - collect ~12 gallons.  Start boiling after ~3 gallons have
been collected.

SCHEDULE:

- Mash for 2 hours             @ 154F.
- Sparge - mash out            @ 170F.
- Boil for 90 minutes total.
- ~.050+ tsp. calcium chloride @ 90 min.
- 3 oz. Northern Brewer plugs  @ 60 min.
- 1 tsp. Irish Moss            @ 20 min.
- Immersion chiller            @ 15 min.
- Cool & ferment               @ 62 -  68 F

Save residual runoff to compensate for boil-off, and to
bring up to 12+ gallon/(1048 min)1054+ target by end of boil.

Use Wyeast 1084 Irish Ale Yeast; or Wyeast 1028 London Ale Yeast


Style Comparisons (@ 70% extraction efficiency):

                    At 70%                   
               Min  Yours   Max    
OG           1.038  1.059  1.048   
Alc %         3.8    5.7    5.0    
IBUs          30    37.1    40     
Color (srm)  40.0   87.5   999.0