An easy, make in advance chocolate show stopper?

[WalkinBye]

For Christmas lunch.
As an addition to Christmas Pudding I'd love to present a lavish looking chocolate affair. I'm a decent cook but my presentation is not great.
Any ideas that could be made in advance and frozen or at least made the day before?
I once did a Nigella Cheat chocolate trifle with a jar of cherries soaked in booze and ready made custard that went down a storm.

[quote Timefornewyear]@MirandaMarple just checked and yes it was you, fabulous suggestion!
I used G&B 70%.
It's a keeper of a recipe. [/quote]
Ah so it was!