Today in 1979, US Patent 4165388 A was issued, an invention of Robert D. Bryce, for his “Torrefied Barley For Brewer’s Mashes.” Here’s the Abstract:
Torrefied, expanded barley for use as a partial replacement for malt in brewer’s mashes is prepared by heating unmalted barley having a protein content of at least about 12% to a temperature sufficient to expand the barley to a degree that a given volume of barley before heating weights about 1.4 to about 1.75 times the weight of the same volume of barley after heating. Before heating, the unmalted barley preferably has a moisture content of about 12% to 20% by weight.
