Josef Groll (born in Vilshofen on 21 August 1813, died in Vilshofen on 22 October 1887) was a Bavarian brewer, best known for his invention of Pilsener beer. The citizens of Pilsen were no longer satisfied with their top-fermented "Oberhefenbier". They publicly emptied several casks of beer in order to draw attention to its low quality and short storage life. Wikipedia
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