Hear this piece read by its author, Dylan Gordon: [audio: issuetwo/dylan.mp3] Reviewed in this essay: Ancestral Appetites: Food in Prehistory by Kristen J. Gremillion. Cambridge University Press, 2011. We humans have learned to eat a great number of foods, prepared in an ever more astounding variety of ways. And as Ancestral Appetites demonstrates, this range…