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31-08-2017, 10:11
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I suppose I should give you the details of the grists of Barclay Perkins WW I Milds.

It’s all rather complicated. So complicated, in fact, that I can’t fit all the details in a single table. There were multiple changes to the ingredients used, mostly prompted by external factors.

For example, flaked maize disappeared from Barclay Perkins grists in the middle of the war. Presumably because maize had to be imported and had become unavailable. The same is true of American hops, which had been very popular with British brewers before the war. Ironically, there was a glut of English hops in the later war years and the government had to step in to stop all the growers becoming bankrupt.



Barclay Perkins Mild Ale grists 1914 - 1921 grains


Date
Year
Beer
OG
pale malt
brown malt
amber malt
crystal malt
SA malt
PA malt
flaked maize
roast barley


11th Mar
1914
X
1051.3
62.1%

6.8%



11.1%



4th Jun
1915
X
1050.9
76.8%

8.5%







9th Jun
1916
X
1048.6
60.4%

7.2%



12.1%



17th May
1917
X
1046.7
71.3%

10.4%
6.8%






10th Jul
1917
GA
1036.3
74.1%

10.9%
5.9%






22nd Mar
1918
X
1046.5
64.0%
10.3%
13.9%







22nd Mar
1918
GA
1037.8
64.0%
10.3%
13.9%







11th Apr
1918
Ale 4d
1026.7
62.6%
5.4%
12.9%
5.4%






18th Sep
1918
Ale 4d
1025.8
60.3%
8.6%
8.6%
6.2%



1.2%


26th May
1919
X
1036.5
62.2%
4.7%
11.3%



8.3%
0.6%


26th May
1919
Ale 4d
1029.4
62.2%
4.7%
11.3%



8.3%
0.6%


2nd Jun
1919
Ale 4d
1026.4
62.2%
4.7%
11.2%



8.3%
0.6%


3rd Jul
1919
X
1039.4
60.7%

10.4%
4.4%


12.0%



21st Nov
1919
X
1042.4
54.4%

9.4%
4.9%


10.3%



21st Nov
1919
Ale 4d
1028.4
54.4%

9.4%
4.9%


10.3%



20th Feb
1920
X
1042.5
52.2%

9.1%
5.4%


12.4%



20th Feb
1920
Ale 4d
1028.3
52.2%

9.1%
5.4%


12.4%



1st Apr
1921
X
1041.4
19.1%

10.9%
5.5%
20.4%
20.4%
13.6%



1st Apr
1921
Ale 5d
1028.4
19.1%

10.9%
5.5%
20.4%
20.4%
13.6%



Sources:


Barclay Perkins brewing records held at the London Metropolitan Archives, document numbers ACC/2305/01/603, ACC/2305/01/604, ACC/2305/01/606, ACC/2305/01/607 and ACC/2305/01/609.




There were only two grains used throughout: pale malt and amber malt. The latter is an interesting one, as it wasn’t that common in Mild Ale recipes. It seems to have been particular to Barclay Perkins.

I’m slightly surprised by the patchy use of crystal malt. That was a common ingredient in Mild Ale. Unlike brown malt, which Barclay Perkins used in their Milds in 1918 and 1919. Why did they suddenly add it to their Mild recipes? My best guess is that they had a lot of it hanging around and wanted to use it. Or they wanted to offset the loss of body through the drop in gravity.
I’m not sure why would have used the roast barley, other than for colour purposes. It only appears in low-gravity recipes.

Their sugar usage was more consistent, with No. 3 invert and Martineau’s BS in the vast majority of recipes. While a small quantity of caramel was in every recipe. This is obviously to darken the colour. By this time their Milds were semi-dark, not as brown as modern Dark Mild, but noticeably darker than their Pale Ales.



Barclay Perkins Mild Ale grists 1914 - 1921 sugar


Date
Year
Beer
OG
no. 3 sugar
caramel
glucose
dark sacc.
Garton's X
Martineau's BS
hops


11th Mar
1914
X
1051.3
13.05%
0.12%

6.81%


MK, EK


4th Jun
1915
X
1050.9
9.55%
0.14%


5.00%

MK Fuggles, MK


9th Jun
1916
X
1048.6
9.66%
0.14%



10.47%
MK


17th May
1917
X
1046.7
5.73%
0.06%



5.73%
MK


10th Jul
1917
GA
1036.3
4.49%
0.11%



4.49%
MK


22nd Mar
1918
X
1046.5
5.51%
0.69%



5.51%
MK, EK


22nd Mar
1918
GA
1037.8
5.51%
0.69%



5.51%
MK, EK


11th Apr
1918
Ale 4d
1026.7
5.76%
0.72%



7.19%
MK, EK


18th Sep
1918
Ale 4d
1025.8

0.26%
9.85%


4.93%
MK


26th May
1919
X
1036.5
12.64%
0.25%




MK


26th May
1919
Ale 4d
1029.4
12.64%
0.25%




MK


2nd Jun
1919
Ale 4d
1026.4
8.68%
0.35%



3.95%
MK


3rd Jul
1919
X
1039.4
5.83%
0.14%



6.56%
MK


21st Nov
1919
X
1042.4
10.19%
0.52%



10.19%
MK


21st Nov
1919
Ale 4d
1028.4
10.19%
0.52%



10.19%
MK


20th Feb
1920
X
1042.5
6.63%
0.36%



13.82%
MK, Pacifics


20th Feb
1920
Ale 4d
1028.3
6.63%
0.36%



13.82%
MK, Pacifics


1st Apr
1921
X
1041.4
3.03%
0.33%



6.66%
MK, Pacific, Alsace


1st Apr
1921
Ale 5d
1028.4
3.03%
0.33%



6.66%
MK, Pacific, Alsace


Sources:


Barclay Perkins brewing records held at the London Metropolitan Archives, document numbers ACC/2305/01/603, ACC/2305/01/604, ACC/2305/01/606, ACC/2305/01/607 and ACC/2305/01/609.




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