Can a cake be frozen?

A designed cake, better not. Fondant and the freezer do not get on: as it thaws, moisture in the air condenses on the surface, the finish turns sticky, marks and loses its shine. Modelled figures soften and colours can run.

What does work is the fridge, which is where your cake should be from the moment you receive it until shortly before cutting.

If you have leftovers and want to keep them longer, freeze the sponge alone, without decoration, well wrapped. It will not be the same cake, but it will be perfectly edible.