Remember in the Bible when Abraham, Noah, and Job rounded up two of every Philistine family and led them into the desert to starve to death, only to have been thwarted by "Mana" literally falling out of the sky to keep them alive? Historians and theologians alike have long speculated as to just what that Mana might have been, and whether there's a natural explanation as well as a supernatural one.
I do believe I have that answer: Mana is Fiddle Faddle™, and it is most certainly supernatural in origin.
Something this freakin' good can only have come from Heaven. And the fact that it's currently "buy one, get one free" at the local grocery is todays equivalent of it dropping out of the sky.