Clean you plate?

Clean your plate, no not anymore.
Actually old fashioned wisdom was: "Leave something for Mr. Manners." This is a phrase once told to children. Another good one was: "Better to go to waste than waist."
Develop self control and leave a bit for the spirits.

Don't clean your plate. Savoir a bite of the decandant dessert and share the rest with the table.

Stop thinking you need to eat it all, stuff your self.
It really is better to not be full, let alone the stuffed way we live our life.