Re: If you had to live off of one food..
Potatoes and Water. That's what I'd choose. Simply because you can do some many things with potatoes. You can make electricity out of them, you can make a variety of foods, they grow in the ground so you don't have to watch them. Plus, they grow crap on them when their even in the darn bag! How awesome is that? Not to mention, water gives you nutrients and crap that you need to survive.