"The guest is here." cake?

A few years back, while my wife was visiting what was still the Soviet Union, she stayed with a host family that served a cake that she really liked.

She asked them what kind of cake it was, and they told her a name in Russian, when they translated it for her, they told her it literally meant “The guest is here.”

Does anybody have an inkling of what goes into this cake?

Please let me know.
in chaos,
Pandamonium