Late 19th century London Stout grists

This is what you were really waiting for. Not boring old OGs and rates of attenuation, but meaty chunks of grist.

I've just realised that my talk is the bones of a ittle history of London Stout. As if I didn't have enough projects already. But I could knock it out pretty quickly. Would anyone be interested? 250 years of London Stout. With a few dozen recipes, obviously. And lots and lots of tables.

Getting back to the topic, can you spot the difference with 1850? A lot more black malt. More than twice as much, on average. While the amount of brown malt is down by a third.

Though sugar had been legal ingredient since 1847, none of the London brewers used it in their Stouts in 1850. What a change by the 1890s. Every brewer used sugar of some sort, on average making up 12.5% of the grist. Quite a few different sorts, as you'll see in the table. Most of it probably invert sugar of some type. The adoption of sugar is probably responsible for the reduction in the percentage of base malt. 

Late 19th century London Stout grists
Year	Brewer	Beer	pale malt	white malt	brown malt	black malt	amber malt	crystal malt	total malt
1899	Barclay Perkins	SDP Ex		58.64%	11.17%	5.98%	7.18%		82.98%
1899	Barclay Perkins	RDP		49.26%	8.82%	5.51%	11.03%	7.72%	82.35%
1899	Barclay Perkins	BS Ex		54.24%	11.38%	6.03%	14.06%		85.71%
1899	Whitbread	CS	75.73%		12.62%	8.74%			97.09%
1900	Whitbread	S	51.25%		13.75%	5.00%	20.00%		90.00%
1899	Whitbread	SS	50.00%		16.07%	4.17%	17.86%		88.10%
1899	Whitbread	SSS	50.00%		16.07%	4.17%	17.86%		88.10%
1895	Truman	Single Stout	65.95%		13.39%	7.44%			86.78%
1895	Truman	Double Stout	65.95%		13.39%	7.44%			86.78%
1895	Truman	Imperial Stout	65.95%		13.39%	7.44%			86.78%
	Average		42.48%	16.21%	13.01%	6.19%	8.80%	0.77%	87.46%

Late 19th century London Stout sugars
Year	Brewer	Beer	no. 2 sugar	no. 3 sugar	Garton	black	other sugar	total sugar
1899	Barclay Perkins	SDP Ex	17.02%					17.02%
1899	Barclay Perkins	RDP		17.65%				17.65%
1899	Barclay Perkins	BS Ex	14.29%					14.29%
1899	Whitbread	CS					2.91%	2.91%
1900	Whitbread	S				3.00%	7.00%	10.00%
1899	Whitbread	SS				3.57%	8.33%	11.90%
1899	Whitbread	SSS				3.57%	8.33%	11.90%
1895	Truman	Single Stout			13.22%			13.22%
1895	Truman	Double Stout			13.22%			13.22%
1895	Truman	Imperial Stout			13.22%			13.22%
	Average		3.13%	1.76%	3.97%	1.01%	2.66%	12.53%