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recipes:thermal_fuse

Thermal Fuse Porter

Style: American Porter

Bentleybrau Brewery's Thermal Fuse Porter

Brewster Beacon

Brewed: 2018-09-30
Target OG: 1.060
Strike hit: 72C
OG: 1.060
FG: 1.030
ABV: 3.94%

BrewTarget Recipe:

Thermal Fuse - Robust Porter (12B)
================================================================================
Batch Size  28,271 L            
Boil Size   31,271 L            
Boil Time   1,000 hr            
Efficiency  70%                 
OG          1,062 sg            
FG          1,018 sg            
ABV         6,0%                
Bitterness  48,9 IBU (Tinseth)  
Color       41,2 srm (Morey)    

Fermentables
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Name                            Type     Amount     Mashed  Late  Yield  Color      
Weyermann - Pale Ale Malt       Grain    3,000 kg   Yes     No    85%    3,4 srm    
Weyermann - Rye Malt            Grain    3,000 kg   Yes     No    85%    3,6 srm    
Brown Malt (British Chocolate)  Grain    1,000 kg   Yes     No    70%    65,0 srm   
Caramel/Crystal Malt - 120L     Grain    500,000 g  Yes     No    72%    120,0 srm  
Chocolate Malt (UK)             Grain    500,000 g  Yes     No    73%    450,0 srm  
Milk Sugar (Lactose)            Sugar    250,000 g  No      No    76%    0,0 srm    
Rice Hulls                      Adjunct  250,000 g  No      No    0%     0,0 srm    
Oats, Flaked                    Grain    200,000 g  Yes     No    80%    1,0 srm    
Black Barley (Roast Barley)     Grain    150,000 g  Yes     No    55%    500,0 srm  
Total grain: 8,850 kg

Hops
================================================================================
Name              Alpha  Amount    Use   Time        Form    IBU   
Bramling          6,0%   25,000 g  Boil  1,000 hr    Pellet  11,6  
Styrian Goldings  4,5%   25,000 g  Boil  1,000 hr    Pellet  8,7   
Bramling          6,0%   35,000 g  Boil  30,000 min  Pellet  12,5  
Styrian Goldings  4,5%   35,000 g  Boil  30,000 min  Pellet  9,4   
Bramling          6,0%   40,000 g  Boil  10,000 min  Pellet  6,7   
Styrian Goldings  4,5%   40,000 g  Boil  0,000 s     Pellet  0,0   

Yeasts
================================================================================
Name                      Type  Form    Amount     Stage    
Wyeast - American Ale II  Ale   Liquid  125,00 mL  Primary  

Mash
================================================================================
Name      Type         Amount    Temp      Target    Time    
mash      Infusion     24,102 L  77,126 C  70,000 C  1 hr    
mash out  Temperature  ---       ---       76,000 C  15 min  
sparge    Fly Sparge   16,071 L  82,421 C  75,000 C  30 min   

Brewday Notes:

Brewed 2018-09-30.
Pitched ~50ml saved yeast slurry into 30g/300ml DME starter the night before (~14 hours before)
Made a second 50g/500ml DME starter, combined starters at beginning of mash.

Liquor volume: 24L
Grain weight: 8.85 kg
Strike temp: 75C @ 0 minutes
Mash temp: 72C @ 10 minutes
Mash temp: 70C @ 25 minutes
Extra head space: ~2-3 L?
Mash tun fullness: 31-32L?
Mash wattage: 200W
Mash pH @ 20 min: 5.48
Mash gravity @ 20 min: 1.030
Mash length: 1 hr
Mash out wattage: 400W
First runnings gravity: 1.052
First runnings pH: 5.19
First runnings volume: 13L (stuck sparge, stirred like crazy over bucket)
Sparge volume: 18 L
Sparge water temp: 70C
Boil pH: 5.22
Boil gravity: 1.058
Boil volume: 31L
Boil wattage: 1600W
Post-boil volume: 29L
Post-boil pH: 5.14
Post-boil gravity: 1.060 hydro adjusted (refract: 14.2°P unadjusted)
- wort adjustment factor 1.00 gives 14.2 == 1.058 OG
Fermenter volume: 26L

No airlock activity @ 12 hours. Bubbling at 18 hours. (21C)
Heavy bubbling 18-48 hours
Done bubbling 72 hours

7 days later 9.2°P (“1.036” on refracto scale) (pulled from airlock without agitation)
- Assuming 1.00 correction factor, corrected FG: 6.17 °P, 1.024, 4.46%

Bottled 2018-10-21 (22 days later):
Refractometer: 9.2°P
Hydrometer: 1.032 raw, 1.030 adjusted
Refractometer reading stable, but way too high.
Readings do not fit refractometer alcohol correction formula.
Bottled anyway. Beware of bottle bombs!
Tastes good, quite sweet but not overly so.
Primed with 125g table sugar in 2 dl water
23.5L in bottling bucket. 4x 5L keg, 3x 750ml, 1x 500ml.

Tasting Notes:

recipes/thermal_fuse.txt · Last modified: 2018/10/21 12:07 by mrmekon