This magic bread fills the stomach and provides all necessary nutrients with only a few small bites, so you can carry food for a long journey without weighing yourself down.
I guess you can make a Fey version of it, if you wish to keep the "mystery recipe" aspect of it. And if eaten, it can grant +1 to endurance checks the rest of the day...
Edit: I just realized this was posted on the 3rd Ed. rules forum. My bad. I was talking 4th. Ed. Sorry.
This magic bread fills the stomach and provides all necessary nutrients with only a few small bites, so you can carry food for a long journey without weighing yourself down.