Mankind, says a Chinese manuscript, which my friend M. was obliging enough to read and explain to me, for the first seventy thousand ages ate their meat raw, clawing or biting it from the living animal, just as they do in Abyssinia to this day. This period is not obscurely hinted at by their great Confucius in the second chapter of his Mundane Mutations, where he designates a kind of golden age by the term Cho-fang, literally the Cook's holiday. The manuscript goes on to say, that the art of roasting, or rather broiling (which I take to be the elder brother) was accidentally discovered in the manner following. The swine-herd, Ho-ti, having gone out into the woods one morning, as his manner was, to collect mast for his hogs, left his cottage in the care of his eldest son Bo-bo, a great lubberly boy, who being fond of playing with fire, as younkers of his age commonly are, let some sparks escape into a bundle of straw, which kindling quickly, spread the conflagration over every part of their poor mansion, till it was reduced to ashes. Together with the cottage (a sorry antediluvian makeshift of a building, you may think it), . . . It goes on to tell how the resulting barbecue made such a hit that for some time, the people continued to burn their houses, until they figured out a better way to cook the pork.
Maybe that is why traces of some 'ancient' civilizations are so hard to find.