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23-08-2020, 07:15
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When visiting archives, I mostly concentrate on brewing records. But there's all sorts of other material, some of it packed with goodies. I got into a routine of always photographing one document which wasn't a brewing book on every visit. Which is why I have pictures of something called "Brewing notebook A-H", A.H. presumably being the initials of a brewer.
It's packed with all sorts of handy stuff: the control prices of barley in WW II, Bass wholesale prices in 1920, the cost price of BBS Export from 1912 to 1919, barrels brewed 1913 to 1955, coal usage 1905 to 1955, brewing materials used 1920 to 1945, quantity of finings per beer in 1921, the price paid for spent grains 1902 to 1952 and much more.
I was having a look through it yesterday in the hope of finding details of the configuration of the brew house. To be specific, the number of mash tuns and coppers they had. I wanted to see how bad the bomb damage was in September 1940, when the brew house took a couple of hits.
I didn't find that, buy I did come across this very useful table , which shows the gravities of all their beers, plus details of the primings and their effect.




Barclay Perkins Gravities in November 1922


Price
minimum Regulation Gravity
Mark
Brewed Gravity
Sweet added
Original Gravity Actual
Declared Gravity
Original Gravity according to Declared Gravities


5d
1027
Ale 5d
1030.2
1 qrt @ 1130
1030.8
1029
1029.6


6d
1033
XLK(C)
1034.2
NIL
1034.2
1033
1033


6d
1033
TT
1034.2
6 qrts @ 1130
1038.1
1033
1037


7d
1039
XLK(B)
1040.2
NIL
1040.2
1039
1039


7d
1039
X
1041.4
3 qrts @ 1130
1044
1041
1042.83


8d
1046
Lager Home
1045.2
NIL
1045.2
1044
1044


8d
1046
XLK(T)
1047.2
NIL
1047.2
1046
1046


8d
1046
L.S.
1047.2
3 qrts @ 1130
1048
1046
1047.7


8d
1046
O.M.S.
1051.2
3 qrts @ 1130
1052.8
1050
1051.6


9d
1054
B.S. (T)
1055.2
4 qrts @ 1130
1957.2
1054
1056


9d
1054
R.N.S.
1055.2
3 qrts @ 1130
1056.7
1054
1055.5


9d
1054
K.K.
1055.2
1 qrt @ 1130
1044.7
1054
1054.5


9d
1054
IBS
1061.2
3 qrts @ 1130
1062.6
1060
1061.4


9d
1054
K.K.K.
1082.2
NIL
1082.2
1081
1081


9d
1054
K.K. Bottling
1070.2
NIL
1070.2
1069
1069


9d
1054
Lager Sp Dark
1058.2
NIL
1058.2
1057
1057


Export

Lager Export
1050.3
NIL
1050.3
1050
1050


Export

XLK EX
1049.2
NIL
1049.2
1048
1048


Export

P.A.
1059.2
NIL
1059.2
1058
1058


Export

B.S.c
1066.2
3 qrts @ 1150
1067.9
1065
1066.7


Export

XMAS B.S.c
1076.2
3 qrts @ 1150
1077.5
1075
1976.5


Export

B.B.S. EX
1080.2
NIL
1080.2
1079
1079


Export

I.B.S. EX
1103.2
NIL
1103.2
1102
1102


Source:


Brewing notebook A-H held at the London Metropolitan Archives, document number ACC/2305/1/711/1.


In case you're wondering, "minimum Regulation Gravity" refers to the last set if price controls, where beer retailing for a certain price had to fit into a gravity band. For some beers, the primings significantly increased the OG, For example, TT (Porter), which by almost 4ยบ.
The table also told me that Barclay Perkins breed a Christmas version of Best Stout. Never stumbled across that in the brewing records.



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