Friday 18 November 2011

England vs Scotland, part 1: the 1830's.

Treat or nightmare. I've one of them for you today. Which it will be, depends on your attitude to detail.There's going to be lots of that. If you're the more superficial type, I'd bog off now before you get bogged down.

Ever since I dragged the family to Glasgow to spend some time with the Scottish Brewing Archive, I've been planning a series of in-depth comparisons between English and Scottish beers and brewing practices. This is part one.

It's taken me a wee while to lasso and tie all those pesky numbers. More than two years. But the wait has been well worth it.

In the interests of fairness and coming up with results that actually have some effing meaning, I'm comparing like for like. That is, beers in the same style and with similar gravities. Not that there's a heap of variety in this first set. All I have from Younger are Shilling Ales. It'll get more complex as we progress through the 19th century and Younger's range gets ever broader.

It says something about early 19th-century beer strengths that only one solitary, single example we'll be looking at today is below 1070º. Nice Cooking Milds.


Date Year Brewer Beer Style OG FG ABV App. Attenuation lbs hops/ qtr hops lb/brl boil time (hours) boil time (hours) boil time (hours) Pitch temp º F max. fermentation temp º F
17th Feb 1837 Whitbread X Mild 1066.2 1030.5 4.73 53.97% 7.65 2.15 2 2 3 63 72
7th Mar 1837 Barclay Perkins X Mild 1071.5 1013.2 7.71 81.53% 7.05 2.44 2.5 58 70
16th Aug 1839 Barclay Perkins X Mild 1071.5 1012.3 7.83 82.79% 9.09 3.16 3.25 59 77
14th Mar 1839 Barclay Perkins X Mild 1071.7 1013.4 7.72 81.32% 7.11 2.48 3.5 58.5 72
12th Apr 1832 Truman X Ale Mild 1072.0 1032.7 5.20 54.62% 4.5 1.30 64 75
3rd Dec 1831 Truman X Ale Mild 1072.3 1021.6 6.71 70.11% 7 2.33 62 77
15th Mar 1837 Whitbread X Mild 1072.6 1033.8 5.13 53.44% 6.05 1.87 2 2 3 62.5 73
14th Feb 1837 Whitbread X Mild 1072.6 1030.5 5.57 58.02% 7.60 2.38 2 2 3 63.5 74.5
2nd Jan 1837 Whitbread X Mild 1072.9 1032.7 5.31 55.13% 7.49 2.43 2 2 3 60 73
13th Mar 1837 Whitbread X Mild 1073.7 1031.6 5.57 57.14% 7.64 2.41 2 2 3 63.5 72.5
23rd Dec 1836 Whitbread X Mild 1074.0 1031.6 5.61 57.30% 7.00 2.35 2.17 2 2.5 64 71
27th Feb 1837 Whitbread X Mild 1074.2 1031.6 5.64 57.46% 6.11 1.99 2 2 3 63 73.5
3rd Mar 1837 Whitbread X Mild 1075.6 1031.6 5.83 58.24% 8.07 2.65 2 2 3 63 71.5
11th Nov 1836 Whitbread X Mild 1075.9 1030.5 6.01 59.85% 6.09 2.07 2 2 3.5 64 75
5th Dec 1836 Whitbread X Mild 1077.0 1029.4 6.30 61.87% 6.55 2.33 2 2 3 63.5 74.5
2nd Dec 1831 Truman XX Ale Mild 1077.3 1024.4 7.00 68.46% 8 2.77 62 79
average 1073.2 1026.9 7.06 2.32 2.3 2.0 3.0 62.1 73.8
24th Dec 1831 Younger, Wm. & Co 60/- Mild 1076 3.97 1.67 1.25 53 70
difference -3.10 -0.65 -1.01 -2.00 -3.00 -9.09 -3.78
Sources:
Whitbread brewing book held at the London Metropolitan Archives, document number LMA/4453/D/01/001
Barclay Perkins brewing book held at the London Metropolitan Archives, document number ACC/2305/1/550
William Younger brewing book held at the Scottish Brewing Archive, document WY/6/1/2/1
Truman brewing book held at the London Metropolitan Archives, document number B/THB/C/115

I guess you want me to kick the teeth out of that? Sorry, I meant pick the bones out of that.


Don't read anything into 60/- equating to X Ale, or ordinary Mild. That's pure historical coincidence.

Based on the standard bolleaux written about Scottish beer, I'm concentrating on three areas:

  • hopping rate
  • boil length
  • fermentation temperature

Which, according to the standard story, should be low, low and long for Scottish beer.

Let's go through them in order.

The Younger's beer is on average about 50% less heavily hopped than the London beers. There's only one English beer, a Truman's X Ale, that contains fewer hops.

Oh look at that! The Younger's beer has a much shorter boil than any of the English beers. None of them was boiled for less than 2 hours. The Scottish beer is, on average, boiled for more than an hour less.


According to Roberts (an other sources), Scottish beers were pitched on average around 10º F cooler than English beers, usually around 50º F. You can see that the Younger's beer was pitched at a greater temperature than that, 53º F. It was indeed pitched 9º F cooler than the average of the English beers. However there's a much smaller difference in the maximum fermentation temperature - just shy of 4º F. And one English beer had the same maximum of 70º F.


The Younger's beer was definitely fermented cooler than the English beers, but the difference than is usually stated.

I've too much for just today. I'll need  a couple more posts to get through it all. What a treat.

1 comment:

The Beer Wrangler said...

uh oh!... Is this evidence of the Scottish beer has less hops? Just as I was winning all those pub arguments!