I remember having eaten this, not many but several times, in places called "Konditorei". Like a coffee shop, but with additional bakery/pastries. Was really good actually, but there were many other options which were at least as good. "Schwarzwälder Kirsch" f.i.

So by no one I assume you mean the "fortgeschrittene Fertigfutterfresser" who prefer other convenient stuff, and/or have no Konditorei near them?