What strange foods exist on your fictional world (though of course these wouldn't be strange to your characters)? What styles of cooking predominate? Can all cook?
Do your characters use magic in food preparation/cooking or are there machines? Just what is eaten on the world you've set up (and is there a class difference here)?
What is the preferred drink(s) for most? Are there food shortages anywhere? Of course the meal can be a good scene in a story/book where vital information is passed on, a changing (for the character) incident occurs and so on.