01-12-2008 Monkey on the Main Line Porter

A ProMash Brewing Session Report

Brewing Date: Saturday January 12, 2008
Head Brewer: Steve Gilbert
Asst Brewer: Rob Adams
Recipe: Monkey on the Main Line Porter


BJCP Style and Style Guidelines
12-B Porter, Robust Porter

Min OG: 1.048 Max OG: 1.065   
Min IBU: 25 Max IBU: 60   
Min Clr: 22 Max Clr: 42  Color in SRM, Lovibond


Recipe Specifics
Batch Size (Gal): 5.50 Wort Size (Gal): 5.50
Total Grain (Lbs): 10.00      
Anticipated OG: 1.074 Plato: 17.98
Anticipated SRM: 45.0        
Anticipated IBU: 46.6      
Brewhouse Efficiency: 75  %   
Wort Boil Time: 60  Minutes   

Actual OG: 1.070 Plato: 17.06   
Actual FG: 1.017 Plato: 4.33   
Alc by Weight: 5.46 by Volume: 7.02 From Measured Gravities.
ADF: 74.6 RDF: 62.5 Apparent & Real Degree of Fermentation.

Actual Mash System Efficiency: 42 %
Anticipated Points From Mash: 9.14
Actual Points From Mash: 5.09


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: 6.47 Gal      
Pre-Boil Gravity: 1.063 SG 15.42 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: 6.01 Gal      
Water Needed Pre-Boil Gravity: 1.068 SG 16.54 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
20.0 2.00 lbs.  Muntons DME - Amber England 1.046 17
40.0 4.00 lbs.  Muntons DME - Dark England 1.046 30
5.0 0.50 lbs.  Molasses Generic 1.036 80
15.0 1.50 lbs.  Honey    1.042 0
10.0 1.00 lbs.  Crystal 120L Great Britain 1.033 120
10.0 1.00 lbs.  Chocolate Malt Great Britain 1.034 475

Potential represented as SG per pound per gallon.

Hops
Amount Name Form Alpha IBU Boil Time
0.75 oz.  Columbus Pellet 14.10 37.9 45 min
1.00 oz.  Cascade Plug 7.20 5.3 10 min
1.00 oz.  Fuggle Whole 5.60 3.4 2 min


Extras
Amount Name Type Time
0.00 Unit(s)  Whirlfloc Fining 10 Min.(boil)


Yeast
White Labs WLP001 California Ale


Mash Schedule
Mash Type: Single Step   
Heat Type: Direct   
Grain Lbs: 2.00   
Water Qts: 0.00 Before Additional Infusions
Water Gal: 0.00 Before Additional Infusions
Qts Water Per Lbs Grain: 0.00 Before Additional Infusions
Tun Thermal Mass: 0.00   
Grain Temp: 80 F Before Additional Infusions

Rest Temp Time
Dough In: 0 0 Min
Saccharification Rest: 0 0 Min
Mash-out Rest: 0 0 Min
Sparge: 0 0 Min

Total Mash Volume Gal: 0.00 - 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: 2.00 Qts Per Lbs: 0.00 Total From Mash: -0.24
      Mash Gallons: 0.00      
      Grain Absorption: 0.24      
Amount Lost in Lauter Tun Deadspace, Grant and Misc. to Kettle: 0.50
     
Top Up Water Added to Kettle: 1.00
Amount into Kettle: 6.01
     
Boil Time (min): 60
Evaporation Rate: 15.00
Amount after Boil: 5.11
     
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: 3.86
Amount After Cooling (4 perc.): 3.70

Grain absorption rate is: 0.12 (Gallons Per Lbs)
Evaporation rate is Percent per Hour
This formulation will yield 3.70 gallons of fermentable wort.
You will need 8.00 gallons of water for the complete brewing session.


Efficiency Specifics
Recipe Efficiency Setting: 75 %

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

Target Volume (Gal): 6.01      
Estimated OG: 1.068 Plato: 16.54

Raw Pre-Boil Targets - only targeted volume/gravity and evaporation
rate taken into account:
Target Volume (Gal): 6.47      
Estimated OG: 1.063 Plato: 15.42

Post-Boil Targets:
Target Volume (Gal): 5.50      
Estimated OG: 1.074 Plato: 17.98

Recorded Actuals - Measurement Taken In Kettle:
Recorded Volume (Gal): 5.50      
Recorded OG: 1.070 Plato: 17.06

At 100 percent extraction from the maximum mash potential:
Total Points: 77.09
Points From Mash: 12.18
Points From Extract/Sugar: 64.91

With the recipe efficiency setting, you should have achieved:
Total Points: 74.05
Points From Mash: 9.14
Points From Extract/Sugar: 64.91

Actuals achieved were:
Actual Points From Mash: 5.09
Actual Mash System Efficiency: 42 %


Fermentation Specifics
Pitched From: Starter
Amount Pitched: 1200 mL
Lag Time: 3.50 hours

Primary Fermenter: Glass
Primary Type: Closed
Days In Primary: 0
Primary Temperature: 70 degrees F

Original Gravity: 1.070 SG 17.06 Plato
Finishing Gravity: 1.017 SG 4.33 Plato



Bottling/Kegging Specifics
Bottling Date: Tuesday January 22, 2008
Desired Carbonation Level: 2.30 Volumes CO2
Fermentation Temperature: 68 F

Amount Kegged: 5.00 Gallons
Days Conditioned: 10
Carbonation Method: Forced
Carbonation Temperature: 48 F
Pressure Used: 12.00 Psi



Fermentation Notes
Checked carboy at 18 hrs, and found krausen had filled headspace and pushed through the airlock. Swapped the airlock out for a big blow off tube. Next time I brew this batch, I need to forget about the airlock and just go straight to the blow off tube. Fermentation finished out in 8 days. Kegged in 10.


Tasting Notes
Tasted after being on the CO2 for 4 days. It's not as sweet as the last MOML I made. I think it is the addition of the extra .5lbs honey that's dried it out more. Also, there was a lot of sediment, which I believe is because I kegged too early. The beer is good, and the sediment will probably work itself out in the first few pints.


Notes
Add Honey and Molases with the 10 minute hop addition.




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