Cheese Wheel
This item could be obtrained from the drop system. It was released a couple of days before the Pyromania Update in June 2012. After the update, the Cheese Wheel was incinerated and renamed to 'Smoked Cheese Wheel', thus becoming a crafting ingredient for a 'Pile of Ash'.
Cheese Wheel
Team Fortress 2 Level 1 Cheese Wheel
This cheese doesn't seem so mysterious until you realize it's full of bullet holes. Somebody got to this cheese before it could talk.