Since 1889 one of the leading cookie producers in Germany, located in Hannover. Bahlsen's most famous and widely distributed product, 'Leibniz Cakes,' are named after the famous mathematician and philosopher Gottfried Wilhelm Leibniz (1646-1716), a co-inventor of calculus and computing machines. The fine, buttery taste of this cookie was one of the reasons a jury at the 1893 Chicago World's Fair awarded Bahlsen the gold medal. It is said that Bahlsen sold one of his chocolate making machines from the Chicago World Fair to a young entrepreneur named Seymour Hershey, who established a famous eponymous company in Pennsylvania.