Monuments of German design

Hermann Bahlsen not only invented the shape of the biscuit, but also introduced the word "Keks" into German, deriving from the English word "cakes". At the end of the 19th century it was all the rage to name products after famous people. Since the biscuits were made in Hanover, the obvious choice was to name them after a famous person from the city: The man chosen was the mathematician Gottfried Wilhelm Leibniz, who, among other things, developed differential equations. Numbers are still very important when making butter biscuits today. The edge of the biscuit has 52 "teeth", and if there is one more or less, it's an imitation.