Hi, I have been asked to put a cake in a window in a store for advertisements. Does anyone know of a "frosting" I can put on a styrafoam "cake" that wont get eaten? It will be there for 60-90 days. I am stumped! Any suggestions would be appreciated. Thanks, Bunny!

If it's on a shelf, enclosed in a case, or out of reach where it won't get picked at, you can use buttercream, otherwise, you could use royal icing, artificial icing, or even spackle from the hardware store.

I've used all crisco buttercream, royal icing and fondant. I tried spackling once, and ended up saying forget it.

There is also something called Perma Ice, that is like spackling I guess but is used to do dummy cakes.

I appreciate your answers, I will keep you posted!!

there is a brand of frosting called PermaIce. it is artificial icing for display cakes.