tag:blogger.com,1999:blog-5445569787371915337.post7211109572791318226..comments2024-03-28T13:20:29.156-07:00Comments on Shut up about Barclay Perkins: Brewing IPA in the 1840'sRon Pattinsonhttp://www.blogger.com/profile/03095189986589865751noreply@blogger.comBlogger7125tag:blogger.com,1999:blog-5445569787371915337.post-74761152391509078612008-10-01T09:17:00.000-07:002008-10-01T09:17:00.000-07:00Andrew-My calculations show a slightly different c...Andrew-<BR/><BR/>My calculations show a slightly different conversion from lb/bbl(UK) to oz/gal(US).<BR/><BR/>Example:<BR/><BR/>For 5 lbs of hops/bbl:<BR/><BR/><BR/>5 lb/bbl(UK) * bbl(UK)/36gal(UK) * 1.2gal(UK)/gal(US) * 16oz/lb = 2.66 oz/gal(US)<BR/><BR/>For a typical 5 gallon homebrew batch, that's over 13oz of hops! Figure a high hop beer could have 10 lb/bbl and that translates to over 1.5 lbs of hops used in just 5 gallons of beer. <BR/><BR/>Holy crap that's a lot of vegetal matter in the boil!Anonymousnoreply@blogger.comtag:blogger.com,1999:blog-5445569787371915337.post-35738561235163397772008-09-30T21:42:00.000-07:002008-09-30T21:42:00.000-07:00I guess I forgot to mention some other details tha...I guess I forgot to mention some other details that may prove important if you were trying to brew a batch using this information: you will need to consider that these are whole flower hops, and in addition to that, storage of these hops may not have been optimal, resulting in a substantial loss of alpha acids and volatile aromatics -- hence the seemingly large amount of hops being employed (vs. contemporary usage).<BR/><BR/>Ron, it may be interesting to see what info you may turn up regarding hop storage, use, and measurement (of alpha or whatever else). Perhaps another chapter of your book? I'm really looking forward to it!Andrew Elliotthttps://www.blogger.com/profile/00261171596820050853noreply@blogger.comtag:blogger.com,1999:blog-5445569787371915337.post-46820582830794551722008-09-30T17:50:00.000-07:002008-09-30T17:50:00.000-07:00Thank you very much andrewThank you very much andrewAnonymousnoreply@blogger.comtag:blogger.com,1999:blog-5445569787371915337.post-55685048634113953822008-09-30T13:49:00.000-07:002008-09-30T13:49:00.000-07:00I believe it was actually 36 gallons per British b...I believe it was actually 36 gallons per British beer barrel.<BR/><BR/>You should probably check out Zythophile's (Martyn Cornell) book -- "Amber Gold & Black." In the gloassary he spells out what a quarter is: "a volume measure of malt equal to eight bushels..." I would venture to guess that for IPA, the malt would generally be Pale Malt? So about 326# / qtr of malt. Modern extract % (coarse grind) is about 80%, so that gives us about 260.8lb of fermentables in the grain, but likely a lot of that would've not been extracted, so I'll multiply by 72% for about 235lb of sugars.<BR/><BR/>Gravity will depend on how much water is used for the mash & sparge; to hit the "average" of 1.068 (16.59% Plato) we would need:<BR/><BR/>lb_sug/(lb_sug + lb_wat) = P<BR/>235/(235 + lb_wat) = .1659<BR/>lb_wat = 1182 lb<BR/>= 141.7 gal (@8.337lb/gal)<BR/>= 3.9 British beer barrels (probably 4 barrels when all said and done)<BR/><BR/>So, now we have 20 to 22lb of hops per 4 barrels, or 5-5.5lb per barrel. Comes out to 2.2-2.4 oz/gal.<BR/><BR/>TMI???<BR/><BR/>Andrew ElliottAndrew Elliotthttps://www.blogger.com/profile/00261171596820050853noreply@blogger.comtag:blogger.com,1999:blog-5445569787371915337.post-70615512947433471282008-09-30T12:22:00.000-07:002008-09-30T12:22:00.000-07:00David,Depends how many quarters of malt were used ...David,<BR/><BR/>Depends how many quarters of malt were used for a beer. The more for the same volume equals a higher starting gravity. You are comparing two different things.<BR/><BR/>There is about 31 gals in a barrel and 16oz per pound so you would multiply the hops by ~0.79.<BR/><BR/>Same reasoning you can convert qtr's to pounds (~326#/pale, 244#/brown I believe)Kristen Englandhttps://www.blogger.com/profile/05212694853976179911noreply@blogger.comtag:blogger.com,1999:blog-5445569787371915337.post-73071385592979321072008-09-30T09:51:00.000-07:002008-09-30T09:51:00.000-07:00"20 to 22 pounds of East Kent hops per quarter of ..."20 to 22 pounds of East Kent hops per quarter of malt."<BR/><BR/>what is the conversion rate for lbs per barrel or ounces per gallon?<BR/><BR/>Thank youAnonymousnoreply@blogger.comtag:blogger.com,1999:blog-5445569787371915337.post-24491019617866290132008-09-30T04:08:00.000-07:002008-09-30T04:08:00.000-07:00My own copy of the Scottish Ale-Brewer is the 1837...My own copy of the <I>Scottish Ale-Brewer</I> is the 1837 version, which doesn't mention IPA at all, something that confirms my growing suspicion that IPA didn't take off in the UK generally until around 1840 - it would be interesting to know in which edition of the Scottish A-B between 1837 and 1847 Roberts felt obliged to start giving instructoions on brewing IPA. Does your copy carry an edition number, Ron?Zythophilehttps://www.blogger.com/profile/07169961035352165436noreply@blogger.com