Anyway to make a print food safe?

I’m designing a chalice (read Crunk Cup) for an upcoming party, and I’m wondering if there is way to make a print food safe.  I imagine extra curing under UV is only half the battle.  Is there any kind of spray on coating that would make it work?  Worst case scenario I will just print something and attach it to the cup portion, but I would rather print the whole thing if possible.