The Leibniz-Keks or Choco Leibniz is a German brand of biscuit or cookie produced by the Bahlsen food company since 1891.
The only connection between the man and the biscuit is that Leibniz was one of the more famous residents of Hanover, where the Bahlsen company is based.
At the time when the biscuit was first made there was a fashion of naming food products after historical celebrities (such as Mozartkugeln).
[2][3] The Leibniz-Keks is a plain butter biscuit, or Butterkeks as it is known in German, inspired by the French Petit-Beurre created in 1886 by Lefèvre-Utile.
Ingredients include sugar, wheatflour, Butter, in Choco Leibnitz cocoa mass, cocoa butter, whey products, glucose syrup, emulsifier, soya lecithin, whole milk powder, salt, raising agents, sodium bicarbonate, citric acid, and flavouring.