09-30-2007 American Pale Ale

A ProMash Brewing Session Report

Brewing Date: Sunday September 30, 2007
Head Brewer: Stephen Gilbert
Asst Brewer:   
Recipe: American Pale Ale


BJCP Style and Style Guidelines
06-A American Pale Ales, American Pale Ale

Min OG: 1.045 Max OG: 1.056   
Min IBU: 20 Max IBU: 40   
Min Clr: 4 Max Clr: 11  Color in SRM, Lovibond


Recipe Specifics
Batch Size (Gal): 5.00 Wort Size (Gal): 5.00
Total Grain (Lbs): 8.00      
Anticipated OG: 1.057 Plato: 14.10
Anticipated SRM: 8.6        
Anticipated IBU: 39.4      
Brewhouse Efficiency: 70  %   
Wort Boil Time: 60  Minutes   

Actual OG: 1.052 Plato: 12.86   
Actual FG: 1.011 Plato: 2.81   
Alc by Weight: 4.22 by Volume: 5.40 From Measured Gravities.
ADF: 78.1 RDF: 64.9 Apparent & Real Degree of Fermentation.

Actual Mash System Efficiency: 171 %
Anticipated Points From Mash: 20.44
Actual Points From Mash: 50.00


Pre-Boil Amounts
Evaporation Rate: 15.00 Percent Per Hour

Raw Pre-Boil Amounts - only targeted volume/gravity and evaporation
rate taken into account:

Pre-Boil Wort Size: 5.88 Gal      
Pre-Boil Gravity: 1.049 SG 12.07 Plato

With sparge water, mash water, additional infusions, vessel losses, top-up
water and evaporation rate recorded in the Water Needed Calculator:

Water Needed Pre-Boil Wort Size: 7.14 Gal      
Water Needed Pre-Boil Gravity: 1.040 SG 10.01 Plato


Formulas Used
Brewhouse Efficiency and Predicted Gravity based on Method #1, Potential Used.
Final Gravity Calculation Based on Points.
Hard Value of Sucrose applied. Value for recipe: 46.2100 ppppg
% Yield Type used in Gravity Prediction: Fine Grind Dry Basis.

Color Formula Used: Morey
Hop IBU Formula Used: Rager

Additional Utilization Used For Plug Hops: 2 %
Additional Utilization Used For Pellet Hops: 10 %


Grain/Extract/Sugar
% Amount Name Origin Potential SRM
50.0 4.00 lbs.  Muntons DME - ExtraLight England 1.046 3
25.0 2.00 lbs.  Pale Malt(2-row) Great Britain 1.038 3
6.3 0.50 lbs.  Victory Malt America 1.034 25
6.3 0.50 lbs.  Crystal 20L America 1.035 20
6.3 0.50 lbs.  Crystal 40L America 1.034 40
6.3 0.50 lbs.  Munich Malt Germany 1.037 8

Potential represented as SG per pound per gallon.

Hops
Amount Name Form Alpha IBU Boil Time
0.45 oz.  Magnum Pellet 15.00 32.1 60 min
0.50 oz.  Cascade Pellet 6.30 3.0 10 min
0.50 oz.  Centennial Pellet 9.10 4.3 10 min
0.50 oz.  Cascade Pellet 6.30 0.0 0 min
0.50 oz.  Centennial Pellet 9.10 0.0 0 min


Extras
Amount Name Type Time
1.00 Unit(s)  Whirlfloc Fining 15 Min.(boil)


Yeast
White Labs WLP001 California Ale


Mash Schedule
Mash Type: Single Step   
Heat Type: Direct   
Grain Lbs: 4.00   
Water Qts: 5.50 Before Additional Infusions
Water Gal: 1.38 Before Additional Infusions
Qts Water Per Lbs Grain: 1.38 Before Additional Infusions
Tun Thermal Mass: 0.00   
Grain Temp: 80 F Before Additional Infusions

Rest Temp Time
Dough In: 166 0 Min
Saccharification Rest: 151 60 Min
Mash-out Rest: 0 0 Min
Sparge: 171 5 Min

Total Mash Volume Gal: 1.70 - After Additional Infusions

Runnings Stopped At: 1.010 SG 2.56 Plato

All temperature measurements are degrees Fahrenheit.


Mash Schedule


Water Needed For Brewing Session
Sparge Amount: 7.00 Sparge Deadspace: 1.25 Total Into Mash: 5.75
Total Grain Lbs: 4.00 Qts Per Lbs: 1.38 Total From Mash: 0.89
      Mash Gallons: 1.38      
      Grain Absorption: 0.48      
Amount Lost in Lauter Tun Deadspace, Grant and Misc. to Kettle: 0.50
     
Top Up Water Added to Kettle: 1.00
Amount into Kettle: 7.14
     
Boil Time (min): 60
Evaporation Rate: 15.00
Amount after Boil: 6.07
     
Left in Kettle Deadspace: 1.00
Left in Hopback: 0.00
Left in Counterflow Chiller: 0.25
Left in Other Equipment / Other Absorption: 0.00
     
Amount to Chillers: 4.82
Amount After Cooling (4 perc.): 4.63

Grain absorption rate is: 0.12 (Gallons Per Lbs)
Evaporation rate is Percent per Hour
This formulation will yield 4.63 gallons of fermentable wort.
You will need 9.38 gallons of water for the complete brewing session.


Efficiency Specifics
Recipe Efficiency Setting: 70 %

With sparge water, mash water, additional infusions, vessel losses, top-up
water and evaporation rate recorded in the Water Needed Calculator:

Target Volume (Gal): 7.14      
Estimated OG: 1.040 Plato: 10.01

Raw Pre-Boil Targets - only targeted volume/gravity and evaporation
rate taken into account:
Target Volume (Gal): 5.88      
Estimated OG: 1.049 Plato: 12.07

Post-Boil Targets:
Target Volume (Gal): 5.00      
Estimated OG: 1.057 Plato: 14.10

Recorded Actuals - Measurement Taken In Ferementer:
Recorded Volume (Gal): 5.00      
+Losses (Gal): 1.20      
Total Volume (Gal): 6.20      
Recorded OG: 1.070 Plato: 17.06

At 100 percent extraction from the maximum mash potential:
Total Points: 66.00
Points From Mash: 29.20
Points From Extract/Sugar: 36.80

With the recipe efficiency setting, you should have achieved:
Total Points: 57.24
Points From Mash: 20.44
Points From Extract/Sugar: 36.80

Actuals achieved were:
Actual Points From Mash: 50.00
Actual Mash System Efficiency: 171 %


Fermentation Specifics
Pitched From: Starter
Amount Pitched: 1 L
Lag Time: 0.00 hours

Primary Fermenter: Glass
Primary Type: Closed
Days In Primary: 8
Primary Temperature: 68 degrees F

Secondary Fermenter: Glass
Secondary Type: Closed
Days In Secondary: 6
Secondary Temperature: 48 degrees F

Original Gravity: 1.052 SG 12.86 Plato
Finishing Gravity: 1.011 SG 2.81 Plato



Mash Notes
Hit the mash with 166 degree water, but that only brought my mash temp up to 151. Target was 154. I forgot to pre-heat the cooler, so that would definitely account for the difference. When I went to sparge, I hit it with 180 degree water, but I think I added more water than was needed. Sparge temp went to 171. target was 168. The whole 1hr mash, I didn't lose 1 degree from my cooler.


Fermentation Notes
My FG ended at 1.010. I'm guessing that my over-topping it off, and my lower mash temp, led to this. I'm crashing the carboy to 48 for a few days before transfering to the brite tank.


Tasting Notes
It tastes a bit thin, but I expected it to given my low mash temp and over dilution. The hop profile, however, is just what I was looking for. The switch from Willamette to Centennial was definitely the right choice.


Problem Notes
My first OG tested at 1.070. I kept adding topoff water until right up to the 5 gal mark, and it still read 1.070. Turns out, I was getting a dense wort pocket. After adding my 1l starter, I'm over 5 gal. After letting it sit for a while, I tested it and it was 1.052. I wish now I had mixed my wort better before taking my first reading. I probably could have gotten a lot closer to 1.057.




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