Originally Posted by patto1ro
I don't think you've got the quantities right. Quarters are a volume measurement and because brown malt was lighter, you get fewer pounds of it to a quarter than pale malt.
brew size: 50 imperial barrels (1,800 imperial gallons)
5.5 quarters Brown malt @ 256 lbs per quarter = 1408 lbs
6.5 quarters pale malt @ 336 lbs per quarter = 2184 lbs
total 3,592 lbs
108 lbs hops
You're right that the gravity of the combined worts isn't given. But it's easy enough to work out. The bottom of column 10 gives the total post-boil volume - 50 barrels. And the bottom of column 12 gives the total number of brewers pound - 873. Divide 873 by 50 and you get the gravity of the beer - 17.46 brewers pounds or 1048.4║.
i realized the quarters were volume, i just hadn't realized that the pale/brown malt had different weights. I only had a weight conversion for bushel => lbs "malt"
thank you, and i did the gravity calculations last night and that's what i got too.
i think my volume calculations were off too.
i was figuring 45 gal in a barrel, which i mathed out from where they were talking about gravities earlier and said that a barrel of pure water was 360 lbs. and since "a pint's a pound the world around" that worked out to 45. (notice on a second reading that they explicitly state that a brrel is 36 gallons. D'oh)
what you have puts it at 43.2 gallons/barrel, so that's another place my gravity got skewed.
EDIT: new rough recipe:
porter finalish - Brown Porter
Batch Size: 3.000 gal
Boil Size: 4.050 gal
Boil Time: 1.500 hr
Bitterness: 31.3 IBUs (Tinseth)
Color: 21 SRM (Morey)
Name Type Amount Mashed Late Yield Color
Brown Malt (British Chocolate) Grain 2.000 lb Yes No 70% 65 L
Pale Malt (2 Row) UK Grain 3.250 lb Yes No 78% 3 L
Total grain: 5.250 lb
Name Alpha Amount Use Time Form IBU
Galena 12.0% 0.600 oz First Wort 1.000 hr Pellet 31.3
Name Type Form Amount Stage
Wyeast - British Ale II Ale Liquid 0.528 cup Primary
Name Type Amount Target Time
mash Infusion 2.750 gal 150.000 F 1.000 hr
sparge Infusion 2.250 gal 165.000 F 15.000 min