 Between 1793 , when Grodzisk became part of Prussia as a result of the Second Partition of Poland , and 1918 , when it became part of a newly independent Poland , the town was renamed Grätz , and the style became known as Grätzer . Records show that annual production of the beer in Grätz was about 3 @,@ 200 barrels ( 5 @,@ 000 hectoliters , 130 @,@ 000 U.S. gal ) , of which 1 @,@ 111 barrels were transported to Poznań , 1 @,@ 581 barrels to other nearby towns , including Wschowa , Kościan , <unk> , Rawicz , <unk> , Kalisz , and <unk> , and 500 barrels were sold within Grätz . In the late 19th century , the beer was being exported into neighboring provinces and other parts of Germany . German immigrants moved to Grätz and built modern breweries , breaking the monopoly that had been held by the brewer 's guild . By the 1890s , the five breweries in Grätz produced over 100 @,@ 000 hectoliters ( 2 @,@ 600 @,@ 000 U.S. gal ) of beer , with Grätzer produced in the largest quantities . It was exported to other parts of Europe and the world and gained fame as a highly valued beverage . Its peak of popularity occurred just prior to the second World War , when it was being exported to 37 countries . 
