From Homestar Runner Wiki
Decemberween Food is traditionally prepared and consumed around the festive time of Decemberween. They can be prepared from scratch or purchased in large family sized cans.
 Gravied Yams
This is made from a large country ham, diced and used as a stuffing, then served separately from what it was stuffed into. It also looks like gravy. It is very uncouth to bogart it.
 Roast Bunny
It is unclear if Roast Bunny is a common Decemberween dish or if it is enjoyed only by The King of Town. The practice seems to be widespread enough for it to be mentioned in the Decemberween Song and for Marzipan to create protest signs against it.