Saint Blaise's roll Food and drink · Herrera de los Navarros, Campo de Daroca, Zaragoza Image of Herrera de los Navarros, not of the place itself. On the day of San Blas, at the beginning of February, the young men carry the saint in procession and afterwards the blessed roll is distributed among the residents, a ring of sweet dough linked to the protection of the throat. Photo: Ainhoa Izquierdo (CC BY-SA 4.0) What to see and do in Herrera de los Navarros