The Choco Leibniz is really a cult biscuit that enjoys a fiercely loyal following. The substrate biscuit is essentially a German version of the French Petite Buerre, and is simply called the Leibniz. They have been baking them since 1891 in Hanover. The Leibniz is actually quite a pleasant biscuit, with the butter flavour clearly present.
The Choco Leibniz prides itself on its unique construction, which involves filling moulds with chocolate then just as it is starting to set dropping in the Leibniz biscuit. The result is a biscuit that has a frill of chocolate and very fine detail in its chocolate relief.
