Brew #77: Alt!

Alt!
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Brewer: Josh Gum
Style: Dusseldorf Altbier
Batch: 5.25 galAll Grain

Characteristics
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Recipe Gravity: 1.053 OG
Recipe Bitterness: 47 IBU
Recipe Color: 16 SRM
Estimated FG: 1.013
Alcohol by Volume: 5.1%
Alcohol by Weight: 4.0%

Ingredients
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CaraMunich 0.75 lb, Grain, Mashed
CaraVienne 0.75 lb, Grain, Mashed
Carafa II malt 0.15 lb, Grain, Mashed
German Munich 3.00 lb, Grain, Mashed
German Special Roast 50 0.75 lb, Grain, Mashed
German pilsener 7.00 lb, Grain, Mashed
German vienna 0.25 lb, Grain, Mashed

Magnum(15aa) 0.80 oz, Whole, 60 minutes
Saaz(3aa) 1.00 oz, Whole, 30 minutes
Saaz(3aa) 0.50 oz, Whole, 0 minutes

German Lager (WLP830) 1.00 unit, Other, 1600mL starter
Irish Moss 1.00 unit, Fining, 1tsp @ 30min
Yeast Nutrient 1.00 unit, Other, 1tsp @ flameout

Notes
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Recipe Notes:
Step mash; 110f for 15 minutes, 150 for 45 minutes
Ferment @ 51f

Batch Notes:
90m boil
7.5g pre-boil 1.047
5.5g final 1.055
1/31 : Raised to 54f for diacytl rest, fermentation sped up noticably for a day and a half.
2/3 : Crashed to 42f.
2/6: Kegged and lagering, FG 1.012, tastes good but there seems to be a little sulphur left for the yeast to clean up. A nice complex malt character with just enough hops to support the malt backbone.. shaping up nicely.