Jeb recently tweeted this image, which appears to be pork, beef and lamb in the player inventory. It would seem that Steve is becoming quite the chef! We'll post more information as it becomes available!
because clearly the sandwiches would make the quantum physics of the intergalactic ozone implode with the series of atomic sector of the nucleus in the pedo bears stomach
By looking at the food bar (across from health) I think in adventure mode you MUST eat food to survive. Also, it looks like there is an xp bar below the health bar. But thats just speculation.
Racist update
hmm that would be a problem now wouldnt it? xD
What about leather?