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02-09-2011, 08:22
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I just can't stay away from Scottish IPA. It's such a contradiction in terms, if you listen to the history written by style nazis. I don't and am free to look at it as dispassionately as possible.

The fun will be tabulicious today. I've two of them for you. Aren't you lucky?

Did I mention my Scottish project? No? Silly me. Getting distracted again. I've started a Scottish project. Based on the 1,666 analyses I have of Scottish beers. Going through will be a joy. Maybe even informative, too.

I've split the beers into two chunks, up to 1880 and 1881 - 1916. There's no particular logic behind the splitting point. It just seemed a convenient place.

Here's table one. Which happens to be all William Younger beers:




Scottish IPA 1851 - 1880


Date
Year
Brewer
Beer
Style
FG
OG
ABV
App. Attenuation
lbs hops/ qtr
hops lb/brl


6th Oct
1851
Younger, Wm.
XP
IPA
1020
1058
5.03
65.52%
15.00
6.67


9th Oct
1851
Younger, Wm.
XXP
IPA
1018
1072
7.14
75.00%
24.00
8.18



1858
Younger, Wm.
XP
IPA
1014
1054
5.29
74.07%
14.80
4.40



1858
Younger, Wm.
XXP
IPA
1016
1059
5.69
72.88%
21.05
5.00



1868
Younger, Wm.
XP
IPA
1013
1051
5.03
74.51%
12.22
3.40



1868
Younger, Wm.
XXP
IPA
1014
1055
5.42
74.55%
11.67
3.29


2nd June
1879
Younger, Wm.
XP
IPA
1016
1052
4.76
69.23%
11.74
2.73


11th July
1879
Younger, Wm.
2XP
IPA
1009
1046
4.89
80.43%
9.00
1.94



1879
Younger, Wm.
2XP
IPA

1046



2.00


22nd Oct
1879
Younger, Wm.
XXP
IPA
1014
1058
5.82
75.86%
9.19
2.41


22nd Oct
1879
Younger, Wm.
XP
IPA
1013
1050
4.89
74.00%
7.94
1.81


24th Oct
1879
Younger, Wm.
XP
IPA
1014
1051
4.89
72.55%
7.94
1.86


29th Oct
1879
Younger, Wm.
XP
IPA
1016
1051
4.63
68.63%
7.65
1.84


30th Oct
1879
Younger, Wm.
XXP
IPA
1016
1058
5.56
72.41%
8.65
2.56


10th Nov
1879
Younger, Wm.
XP
IPA
1012
1051
5.16
76.47%
8.00
1.90


11th Nov
1879
Younger, Wm.
XXP
IPA
1015
1058
5.69
74.14%
9.44
2.62


16th Sept
1880
Younger, Wm.
XP
IPA
1013
1052
5.16
75.00%
9.68
2.13


20th Sept
1880
Younger, Wm.
XXP
IPA
1019
1060
5.42
68.33%
10.56
2.81


7th Dec
1880
Younger, Wm.
XXP
IPA
1018
1059.5
5.49
69.75%
12.90
2.99


9th Dec
1880
Younger, Wm.
XP
IPA
1012
1052
5.29
76.92%
11.11
2.34


Average




1014.84
1054.7
5.33
73.17%
11.71
3.14


Sources:


Documents WY/6/1/2/5, WY/6/1/2/14, WY/6/1/2/21, WY/6/1/2/28 and WY/6/1/3/9 held at the Scottish Brewing Archive.



Note how the hopping rate fell considerably after the 1850's, falling to under 2 lbs per barrel for XP. Before picking up again a little around 1880. The average gravity, 1054.7, is pretty similar to the average for all beer and about the same as Porter.

For a bit of variation, table two also has beers from Thomas Usher:




Scottish IPA 1881 - 1916


Date
Year
Brewer
Beer
Style
FG
OG
ABV
App. Attenuation
lbs hops/ qtr
hops lb/brl


11th Apr
1881
Younger, Wm.
XP
IPA
1015
1053
5.03
71.70%
10.00
3.04


15th Apr
1881
Younger, Wm.
XXP
IPA
1012
1060
6.35
80.00%
17.14
3.89


3rd May
1881
Younger, Wm.
XP
IPA
1014
1054
5.29
74.07%
9.23
3.06


29th Aug
1881
Younger, Wm.
XP
IPA
1018
1053
4.63
66.04%
7.69
2.30


5th Jan
1885
Usher
IP
IPA
1013
1047
4.50
72.34%
8.00



8th Jan
1885
Usher
IP
IPA
1015
1046
4.10
67.39%
8.00
1.43


18th Feb
1885
Usher
IP
IPA
1015
1046
4.10
67.39%
8.00
1.73


29th May
1885
Younger, Wm.
XP
IPA
1013
1054
5.42
75.93%
11.50
2.84


15th May
1888
Usher
IP
IPA
1010
1046
4.76
78.26%
10.00
2.65


26th Dec
1888
Usher
IP
IPA
1013
1046
4.37
71.74%
8.00
2.00


5th Jan
1894
Usher
IP
IPA
1014
1044
3.97
68.18%
8.00



10th Jan
1894
Usher
IP
IPA
1014
1044
3.97
68.18%
7.00



26th Jan
1894
Usher
IP
IPA
1013
1044
4.10
70.45%
8.00



11th Jul
1894
Usher
IP
IPA

1044


8.00
1.50



1906
Younger, Wm.
XP Burton
IPA

1050.4






4th Dec
1912
Usher
IP
IPA
1014
1042
3.70
66.67%
6.00



6th Dec
1912
Usher
IP
IPA
1015
1042
3.57
64.29%
6.50



12th Feb
1913
Usher
IP
IPA
1014
1042
3.70
66.67%
5.75



19th Mar
1913
Usher
IP
IPA
1013.5
1042
3.77
67.86%
5.75



19th Aug
1914
Usher
IP
IPA
1012.5
1042
3.90
70.24%
6.00



26th Aug
1914
Usher
IP
IPA
1013
1042
3.84
69.05%
6.00



8th Dec
1914
Usher
IP
IPA
1014
1040
3.44
65.00%
5.50
0.72


29th Feb
1916
Usher
IP
IPA
1013
1041
3.70
68.29%
5.50



7th Mar
1916
Usher
IP
IPA
1015
1041
3.44
63.41%
5.50



14th Mar
1916
Usher
IP
IPA
1013.5
1040
3.51
66.25%
5.50



Average




1013.76
1045.82
4.22
69.54%
7.77
2.29


Sources:


Documents WY/6/1/3/9, TU/6/1/1, WY/6/1/2/31, TU/6/1/2, WY/6/1/1/14 and TU/6/1/5 held at the Scottish Brewing Archive.



Usher knocks the average gravity down to 1045. With a gravity in the low 1040's and fairly modest hopping, Usher's IP looks rather like an AK. You can see the gravity gradually dropping from 1047 to 1040.

I'm not sure how much the average hopping rate per barrel is. Too many numbers are missing and there's a big discrepancy between the Younger and Usher beers. Interesting that the average attenuation went down along with the gravity. Were they they trying to disguise the drop in gravity by keeping the FG the same?

In part two we'll be taking a look at 20th century Scottish IPAs. Believe me, it's even more fun than the 19th century.https://blogger.googleusercontent.com/tracker/5445569787371915337-9136374557098962310?l=barclayperkins.blogspot.com


More... (http://barclayperkins.blogspot.com/2011/09/scottish-ipa-1851-to-1916.html)