1762 W. Burton Let. 13 Jan. in f. 273 The Porter Brewers likewise make a Beer of an Extraordinary Strength, called Stout, that will bear being made weaker by mixing it with Smal.
1839 A. Ure 95 The black malt used by the porter brewer..is partially charred.
2001 34 271 Ware brown malt..was the principal choice of the major porter brewers, commanding the highest prices.