Via Megan McArdle, a lengthy look at the truth about how our ancestors ate.
It wasn't pretty, unless they were royalty.
That food should be fresh and natural has become an article of faith. It comes as something of a shock to realize that this is a latter-day creed. For our ancestors, natural was something quite nasty. Natural often tasted bad.
Fresh meat was rank and tough; fresh milk warm and unmistakably a bodily excretion; fresh fruits (dates and grapes being rare exceptions outside the tropics) were inedibly sour, fresh vegetables bitter. Even today, natural can be a shock when we actually encounter it. When Jacques Pepin offered free-range chickens to friends, they found “the flesh tough and the flavor too strong,” prompting him to wonder whether they would really like things the way they naturally used to be. Natural was unreliable. Fresh fish began to stink. Fresh milk soured, eggs went rotten.