“Chocolate Mouse Cake”
Some friends encountered that sign over the weekend at a fund-raising silent auction.
The cake looked great in a phone-photo. So "Mouse" was probably a misspelling.
Though I suppose if you whipped the mouse into a fine puree, the vermin could be incorporated into the recipe with no visible evidence.
"Have you tried the Mouse Cake?"
"Oh, yes. It's a rodenty delight. Bite after bite of mousey goodness."