The first time I heard about huitlacoche, a parasitic fungus that grows on corn, was on Steve, Don’t Eat It! — probably not the most positive way to learn about an exotic and unusual food. Known as corn smut in English, huitlacoche is seen as a delicacy in Mexico — it was eaten in pre-Columbian Mesoamerica — and is now growing in popularity. Now don’t be so squeamish: you don’t object to the idea of eating mushrooms or truffles, so why should this fungus be any different? Via Aaron Cohen. Photo credit: CIMMYT (CC licence).