LAST week we drove out to a village not too far from Oaxaca city called Etla.  In the Mercado we stopped to buy some tejate.  It's a drink made from flor de cacao, mamey pits,fermented cacao beans, and toasted maize.  They grind the ingredients, make a paste and add water and when it is chilled the flor de cacao, the pasty foam rises to the top.  It doesn't look very appetizing but it is quite refreshing on a hot day.  It a typical drink of The Valley Zapateca de Oaxaca.  I don't think you find it anywhere else.