hmm...what's the basis for criteria? something they ate in the movie, or just something that strikes you as being potentially relate-able to the movie?
Something representative of the movie, but if we can we try to pick a food that is noticeable in the movie. So, for instance, you could go with anything Hawaiian for "The Descendants," but they were always eating ice cream, so I picked that. On the other hand, you would absolutely have to have chocolate pie for "The Help."