Should be served with a large portion of Who Hash, the exact contents of which are unknown even to the residents of Whoville themselves, as it comes only in cans. However, it's not like this is anything unusual, as your average American has no idea what is actually in a can of cranberry sauce.

Actually, it would seem that the citizens of Whoville have a hard time nailing down their foods in general. "Roast beast"? Starvation or total cluelessness, I'll wager.