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Curt Stock's Gatekeeper Memorial Porter - Al Boyce
March 16, 2004

gal.

Category Porter
Subcategory Robust Porter
Recipe Type All Grain
Batch Size 5 gal.
Volume Boiled 7 gal.
Mash Efficiency 72 %
Total Grain/Extract 12.76 lbs.
Total Hops 3.0 oz.
Calories (12 fl. oz.) 253.3
Cost to Brew $44.71 (USD)
Cost per Bottle (12 fl. oz.) $0.84 (USD)
Summary : by Curt Stock - see "Competition Corner", March 2004 in BeerTools.com
8 lbs. Maris Otter Pale info
2 lbs. English Mild Ale info
1 lbs. English Chocolate Malt info
0.75 lbs. British Crystal 55°L info
0.25 lbs. Crystal Malt 90°L info
0.25 lbs. Belgian Aromatic info
0.25 lbs. Roasted Barley info
0.13 lbs. Belgian Special B info
0.13 lbs. Belgian Biscuit info
1 oz. East Kent Goldings (Pellets, 5.7 %AA) boiled 60 min. info
1 oz. Fuggle (Pellets, 4.4 %AA) boiled 30 min. info
1 oz. Fuggle (Pellets, 4.4 %AA) boiled 5 min. info
.25 lb. Debittered Black Malt (not included in calculations)
.13 lb. Special Roast Malt (not included in calculations)
Yeast : WYeast 1318 London Ale III info
Single infusion mash - 152 degF for 1 hour. Debittered black malt wasn't listed in the BeerTools palate, and Special Roast malt didn't fit in the allowed grain bill fields, but theywill darken the recipe considerably.
  Predicted Robust Porter Compliance
Original Gravity 1.064 1.048 - 1.065 100 %
Terminal Gravity 1.015 1.012 - 1.016 100 %
Color 31.62 °SRM 22.00 - 35.00 °SRM 100 %
Bitterness 42.6 IBU 25.00 - 50.00 IBU 100 %
Alcohol (%volume) 6.4 % 4.80 - 6.00 % 64 %
  93 % overall

Apparent Real
Original Extract 15.60 °Plato 15.60 °Plato
Attenuation 75.7 % 61.3 %
Extract 3.79 °Plato 6.04 °Plato

% Weight % Volume
Alcohol 5.0 % 6.4 %

Weight
(lbs.)
Gravity Points Color
(MCU)
Maris Otter Pale

8 (62.7%)

206.3 (64.7%)

24.0 (3.5%)
English Mild Ale

2 (15.7%)

50.2 (15.7%)

5.5 (0.8%)
English Chocolate Malt

1 (7.8%)

23.0 (7.2%)

475.0 (69.2%)
British Crystal 55°L

0.75 (5.9%)

17.3 (5.4%)

43.1 (6.3%)
Crystal Malt 90°L

0.25 (2.0%)

5.6 (1.8%)

22.5 (3.3%)
Belgian Aromatic

0.25 (2.0%)

6.1 (1.9%)

6.5 (0.9%)
Roasted Barley

0.25 (2.0%)

4.7 (1.5%)

78.1 (11.4%)
Belgian Special B

0.13 (1.0%)

2.6 (0.8%)

28.7 (4.2%)
Belgian Biscuit

0.13 (1.0%)

3.1 (1.0%)

3.0 (0.4%)
Variety %Alpha
Acid
Weight
(oz.)
Boil
(minutes)
Formula %Utilization
@ 1.046
Average IBU
East Kent Goldings (Pellets) 5.7 1 60 BeerTools 33.5 28.6 28.6
Fuggle (Pellets) 4.4 1 30 BeerTools 18.7 12.3 12.3
Fuggle (Pellets) 4.4 1 5 BeerTools 2.5 1.7 1.7
Total IBU 42.6
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