I don't think you "need" more (in fact some studies show the whole protein recovery drink thing isn't substantiated and really just plain more calories in carbs is better for recovery).

That said, I certainly have been known to crave meat after a long ride. After my 600k, that was all I wanted - a cheeseburger (bacon double, dontcha know). Same with the Death Ride this Saturday. In fact, I'm still a little hungry...