Pre-WW II London Stout adjuncts and sugars

Flaked oats appear in the Whitbread and Truman examples to enable some to be sold as Oatmeal Stout. I wonder if any drinkers noticed that Oatmeal Stout and plain old Stout were identical? Not much to report, other than that. Some flaked maize at Barclay Perkins, along with roast barley. Truman also used roast barley in place of black malt.

Much more complications with the sugars, with seven different ones across the four breweries.

There’s No. 3 in a couple, which is what you would expect. Black sugar I’m guessing is something along the lines of No. 4 invert. Duttson and CDM are types of caramel. While cane sugar is just raw cane sugar. Something easily supplied by Britain’s tropical colonies in the Caribbean and the Far East.

Pre-WW II London Stout adjuncts
Year	Brewer	Beer	oats	flaked maize	roast barley
1937	Courage	Stout
1936	Barclay Perkins	BS		4.35%	10.87%
1937	Whitbread	LS	0.78%
1931	Truman	BS	1.45%		5.06%
1931	Truman	St	1.45%		5.06%
Sources:
Courage brewing record held at the London Metropolitan Archives, document number ACC/2305/08/263.
Barclay Perkins brewing record held at the London Metropolitan Archives, document number ACC/2305/01/621.
Whitbread brewing record held at the London Metropolitan Archives, document number LMA/4453/D/09/125.
Truman gyle book held at the London Metropolitan Archives, document number B/THB/C/114.

Pre-WW II London Stout sugars
Year	Brewer	Beer	malt extract	no. 3 sugar	caramel	Duttson	CDM	black sugar	cane sugar
1937	Courage	Stout	2.00%				2.67%		5.33%
1936	Barclay Perkins	BS		11.59%	1.45%
1937	Whitbread	LS		8.37%		3.79%
1931	Truman	BS						4.34%	3.13%
1931	Truman	St						4.34%	3.13%
Sources:
Courage brewing record held at the London Metropolitan Archives, document number ACC/2305/08/263.
Barclay Perkins brewing record held at the London Metropolitan Archives, document number ACC/2305/01/621.
Whitbread brewing record held at the London Metropolitan Archives, document number LMA/4453/D/09/125.
Truman gyle book held at the London Metropolitan Archives, document number B/THB/C/114.