A quick glance at the should tell you a few things.
First, that I've a much more varied range of sources and far more breweries represented.
Second, that they're a right disparate bunch of beers. Gravities going from 1078º all the way down to 1024º. The level of attenuation is just as varied, from a nice round 80% down 37.5%. Nourishing Stout? You're having a laugh.
The evolution of Tennent's Milk Stout is a marvel. Starting in 1924 with an OG of 1038.3,and ABV of 3.56% and 71.80% attenuation. By 1933 it was down to OG 1024, 1.16% ABV and 37.50% attenuation. 1.16% ABV. That's even lower that the watery German top-fermenting beers of the 19th century.
As you've probably guessed, there are several differnt types of Stout jumbled up in there. There are some old-fashioned style ones like McEwan's Double Imperial Stout, Bernard Imperial Stout, Usher Export Stout, Wright Crown Stout and George Younger XXX Stout. When the 1930's roll around, this type has mostly disappeared. Replaced by Nourishing Stout and Milk Stout.
Now here's a strange phenomenon. Some of the Milk Stouts are quite high OG - William Younger an McEwans, for example, which are over 1060º - and are normally attenuated, that is 70%-odd. You'd expect a Milk Stout, if it contains any amount of lactose, to have a much higher FG. Other, like Murrays, are much more like you would expect: low attenuation, low ABV.
And, of course, there are those barely-alcoholic Nourishing Stouts. Which must have been pretty damn sweet. Certainly sweeter than most of the Milk Stouts.
That's it for now. Though there's still one more instalment to come: the postwar years. If anyone is still awake.
Scottish Stout 1920 - 1939 | ||||||||||||
Year | Brewer | Beer | Style | Price | size | package | Acidity | FG | OG | colour | ABV | App. Atten-uation |
1920 | Usher | Stout | Stout | pint | draught | 1021 | 1048 | 3.52 | 56.87% | |||
1920 | Usher | Export Stout | Stout | pint | bottled | 1024 | 1067 | 5.51 | 63.58% | |||
1921 | Brown (Coldstream Brewery) | Stout | Stout | pint | bottled | 1016 | 1050.8 | 4.51 | 68.50% | |||
1922 | Calder | Stout | Stout | pint | draught | 1011 | 1053 | 5.47 | 79.24% | |||
1922 | Ushers (Edinburgh) | Extra Stout (Belgian sample) | Stout | pint | bottled | 1022 | 1069.2 | 6.15 | 68.50% | |||
1923 | Bernard | Imperial Stout | Stout | pint | bottled | 1023 | 1057.6 | 366 | 4.40 | 59.21% | ||
1923 | Henderson, Alloa | Stout | Stout | pint | 1008 | 1040 | 4.16 | 80.00% | ||||
1923 | Wright (Perth) | Crown Stout | Stout | pint | bottled | 1017 | 1050 | 4.27 | 66.00% | |||
1924 | Ballingall | Imperial Stout Special Quality | Stout | pint | bottled | 1016 | 1038.7 | 2.87 | 57.62% | |||
1924 | McEwan | Double Imperial Stout | Stout | pint | bottled | 1022 | 1056.5 | 4.49 | 61.59% | |||
1924 | McEwan | Double Imperial Stout | Stout | pint | bottled | 1020 | 1078 | 7.57 | 74.36% | |||
1924 | Tennent | Nourishing Stout | Stout | pint | bottled | 1011 | 1038.3 | 3.56 | 71.80% | |||
1925 | Tennent | Nourishing Stout | Stout | pint | bottled | 1011 | 1037 | 3.37 | 70.27% | |||
1927 | Tennent | Nourishing Stout | Stout | pint | bottled | 1014 | 1039 | 3.23 | 64.10% | |||
1928 | Tennent | Nourishing Stout | Stout | pint | bottled | 1015 | 1039 | 3.10 | 61.54% | |||
1928 | Usher | Stout | Stout | 1022 | 1045 | 3.11 | 52.22% | |||||
1928 | Wright (Perth) | Stout XXX | Stout | pint | bottled | 1013 | 1035 | 2.84 | 62.86% | |||
1929 | McEwan | Imperial Stout | Stout | pint | bottled | 1010 | 1044 | 4.42 | 77.27% | |||
1929 | Murray | Oatmeal Stout | Stout | pint | bottled | 1016 | 1044 | 3.62 | 63.64% | |||
1929 | Younger, Geo | XXX Stout | Stout | pint | bottled | 1012 | 1047.5 | 4.61 | 74.74% | |||
1930 | McLennan & Urquhart | Dalkeith Stout | Stout | pint | bottled | 1020 | 1040.5 | 2.70 | 51.85% | |||
1931 | Caler | Milk Stout | Stout | nip | bottled | 1023 | 1059 | 4.65 | 61.02% | |||
1931 | Dryborough | Nourishing Stout | Stout | pint | bottled | 1014 | 1033 | 2.45 | 57.58% | |||
1931 | McEwan | Special Stout Red Label | Stout | nip | bottled | 1019 | 1043.8 | 3.19 | 56.62% | |||
1931 | Tennent | Nourishing Stout | Stout | 3d | nip | bottled | 1016 | 1039 | 2.97 | 58.97% | ||
1931 | Younger, Geo | Milk Stout | Stout | pint | bottled | 1020 | 1044 | 3.09 | 54.55% | |||
1932 | Bernard | Double Brown Stout | Stout | pint | bottled | 1010 | 1035.5 | 3.37 | 73.24% | |||
1932 | Jeffrey & Co | Nourishing Stout | Stout | pint | bottled | 1012 | 1031 | 2.45 | 61.29% | |||
1932 | Morrison | Stout | Stout | pint | bottled | 1016 | 1033 | 2.19 | 51.52% | |||
1932 | Reid | Special Stout | Stout | pint | bottled | 1012 | 1051.5 | 5.14 | 76.70% | |||
1932 | Tennent | Nourishing Stout | Stout | pint | bottled | 1012 | 1030 | 2.32 | 60.00% | |||
1933 | Dryborough | Nourishing Stout | Stout | pint | bottled | 1019 | 1031 | 1.54 | 38.71% | |||
1933 | Murray | Milk Stout | Stout | pint | bottled | 1018 | 1036 | 2.31 | 50.00% | |||
1933 | Tennent | Light Stout | Stout | pint | bottled | 1014 | 1032 | 2.32 | 56.25% | |||
1933 | Tennent | Nourishing Stout | Stout | pint | bottled | 1015 | 1024 | 1.16 | 37.50% | |||
1933 | Tennent | Nourishing Stout | Stout | pint | bottled | 1014 | 1029 | 1.93 | 51.72% | |||
1933 | Tennent | Nourishing Stout | Stout | pint | bottled | 1013 | 1031 | 2.32 | 58.06% | |||
1933 | Younger, Wm. & Co | Stout | Stout | 8d | pint | bottled | 1052.6 | |||||
1936 | McEwan | Milk Stout | Stout | 6d | half pint | bottled | 0.07 | 1013 | 1064.4 | 6.70 | 79.66% | |
1936 | Younger, Wm. & Co | Milk Stout | Stout | 10.5d | pint | bottled | 0.08 | 1015 | 1063 | 6.30 | 76.67% | |
1937 | Calder Alloa | Milk Stout | Stout | pint | bottled | 1022 | 1055.8 | 4.32 | 60.09% | |||
1937 | Murray | Milk Stout | Stout | 6d | pint | bottled | 0.06 | 1019 | 1044.8 | 3.30 | 57.14% | |
1937 | Younger, Geo | Cream Double Stout | Stout | pint | bottled | 1026 | 1045.5 | 2.56 | 43.96% | |||
1937 | Younger, Wm. & Co | Milk Stout | Stout | pint | bottled | 1020 | 1068 | 6.24 | 70.59% | |||
1939 | Calder Alloa | Milk Stout | Stout | 5d | half pint | bottled | 1021 | 1052.5 | 4.06 | 60.00% | ||
1939 | Younger, Wm. & Co | Milk Stout (Monk Export Brand) | Stout | bottled | 0.08 | 1024 | 1065.8 | 1 + 25 | 5.42 | 63.68% | ||
1939 | Younger, Wm. & Co | Milk Stout | Stout | 6d | half pint | bottled | 1019 | 1065.5 | 6.04 | 70.99% | ||
Sources: | ||||||||||||
Thomas Usher Gravity Book document TU/6/11 held at the Scottish Brewing Archive | ||||||||||||
Younger, Wm. & Co Gravity Book document WY/6/1/1/19 held at the Scottish Brewing Archive | ||||||||||||
Whitbread Gravity book held at the London Metropolitan Archives, document number LMA/4453/D/02/001 | ||||||||||||
Thomas Usher brewing record TU/6/1/6 held at the Scottish Brewing Archive | ||||||||||||
Thomas Usher Gravity Book document TU/6/11 held at the Scottish Brewing Archive | ||||||||||||
Truman Gravity Book held at the London Metropolitan Archives, document number B/THB/C/252 |
2 comments:
I wonder if some of the figures for milk stout are distorted because the lactose was added AFTER fermentation, and/or the OGs recorded were BEFORE the lactose addition? Just a thought. I'm fairly sure, reading between the lines, the deal Sidney Nevile struck with the excise in the 1920s after Whitbread acquired the rights to Mackeson was to get the beer taxed on the actual fermentables, rather than any OG including the non-fermentable lactose, which, of course, would have cut the tax payable and make the beer capable of being sold at a lower price (or at the same price for more profit).
Martyn-
what you say sounds right to me - it makes sense. The addition of lactose, in this context, is not part of the brewing/fermentation process, it's non-fermentable sugar added after fermentation (I think) to sweeten the beer.
Getting the beer taxed on the actual fermentable sugars sounds like a very fair solution to me.
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