El Pica, in La Purificacion, Texcoco, is a massive complex of Mexican food delights.  You enter through a tunnel of trees and vines, like a ride at Disneyland.  While the Torres family has been making barbacoa here since 1967, around 20 families from the town also sell various foods, such as tlacoyos, desayunos, pan, salsas, chicharron, tamales, and so on, to the thousands of people who come here each weekend.