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. |