How to make a cover for a molten cake? I recently visited a restaurant called Zuma, and they had this unbelievable chocolate molten cake. 

As you can see they have a cover on top, like a sheet of chocolate. How would one make this? I am not particularly interested on they write the name(however that would be a bonus) but just the sheet to cover the top.

Thanks in advance.
It looks like that's a chocolate transfer sheet, which is just a very thin layer of chocolate with patterns printed onto it and then baked

Here's a link I found of someone doing this at home:

http://forums.egullet.org/topic/105238-demo-making-chocolate-transfer-sheets/