I *think* a cafe in the Niederdorf in ZH invented the Mohnkopf - otherwise known as Walnut Whips, in the UK at least. There's even a guild-type gold Mohnkopf emblem hanging outside the cafe. The name (literally meaning poppyseed head) comes from the inventors idea that it resembled a Moors head (as in a Black mans head) - hmm ... yummy, though, even without the walnut!

Ps, just been reflecting on this: it may have something to do with smoking Opium, and the need for super-sweet pick-me-ups after riding the Horse... er, so I've been told <cough>