"HOW LAGER IS BREWED : BEER MADE WITH YEAST THAT SINKS, INSTEAD OF RISING, AFTER FERMENTATION.
That very popular type of light beer generally called Lager is a favourite alcoholic beverage practically all over the world. Among the hundreds of different kinds of brews it holds a high place in popular esteem, both in the beer-drinking countries and in the Latin world. In English beer (other than lager), a kind of yeast is used that comes to the top after fermentation, whereas in lager the yeast settles to the bottom the fermenting-vessels. That is the difference between the two. Lager, it is claimed, was brewed by the ancient Egyptians, but, of course, its real birthplace, as we know it to-day, was Germany, whose methods of brewing have been copied all over the world. Beer has played very important part in the political history of many countries, and only recently the extra taxation of lager led to political crisis in Bavaria. Lager differs from other beers inasmuch as the maturing period is much longer, for, whereas the type of beer most native to England remains in the cellars for one week only in many cases, and three weeks at the most, lager remains maturing from four to six months, which, it is claimed, tends to make it highly digestible. This lengthy conditioning or maturing period during manufacture gave the beer its name, for lager is the German word for storage,” In Messrs. Barclay Perkins and Co.’s brewery the brew remains untouched by hand throughout each process, and everywhere scrupulous cleanliness is observed. Even the yeast used for fermentation is cultivated from the original cell in a wonderful machine, so that the yeast that goes into the fermenting-vessels is absolutely pure and free from disease."
Illustrated London News - Saturday 28 June 1930, page 38.
Lager, the 1930's and Barclay Perkins. How could I resist?