Part IV: Earth


Episode Info

Of all the traditional methods he explored, says Pollan, fermentation is the most mysterious: the work of "cooking" is done not with heat, but by microbes. It is also more common in our diets than we realize, involved in a third of the foods we eat. Director Peter Bull travels to Peru to visit women who chew yuca root and collectively spit it out into a vat so enzymes in their saliva will jump-start the fermentation process for the making of the traditional beverage masato.