Tortas de BarrioAfter a long drive through the high desert of north-central Mexico—broken occasionally by agricultural fields and surprisingly, some vineyards—my husband and I were hungry when we reached Zacatecas, a colonial gem. Right away, we set out on foot along steep cobblestone streets and found this simple but scrumptious torta in one of the taquerias on our route. I've streamlined the process to make this torta, but all the filling ingredients are the same.