Today in 1873, US Patent 135245 A was issued, an invention of Louis Pasteur, for his “Improvement in Brewing Beer and Ale.” There’s no Abstract, but Pasteur explains in the description that this is a “process of brewing without the presence in the wort of atmosphericair, my invention has for its object to produce a better quality and greater quantity of beer from the same quantity and quality of wort, and to afford a beer which shall also embody the quality of greater degree of unalterableness during time and changes of climate, &c., in transportation and use; and to these ends my invention consists in expelling the air from the boiled wort while confined in a closed vessel or closed vessels, and then cooling it by the application of sprays of water to the exterior of such vessel or vessels, as will be hereinafter more fully explained.”
