Named after monaka, a traditional Japanese confection of sweet red bean paste sandwiched between two wafers.
https://en.wikipedia.org/wiki/Monaka
It's not terribly popular even in Japan, since it's dry, bland, fragile and has to be assembled on the spot or it goes soggy.
Good metaphor, then; do what we must, not what others want from us.
"sandwiched between two wafers"
Pun intended?
Almost certainly.