"I ate his liver with some fava beans and a nice chianti."

The title is Hannibal Lecter's famous line from Silence of the Lambs.  I learned at the movies subreddit that there is a subtle implication:

Lecter could be treated with drugs called monoamine oxidase inhibitors - MAOIs. As a psychiatrist, Lecter knows this.

The three things you can't eat with MAOIs? Liver, beans, wine.

Lecter is a) cracking a joke for his own amusement, and b) saying he's not taking his meds.