The mountain olive oil of the Palancia Food and drink · Jérica, El Alto Palancia, Castellón Image of Jérica, not of the place itself. Virgin oil obtained from the serrana, an olive variety native to these sierras, with a fruity aroma and mild bitterness; the dry-farmed olive groves of the valley have given oil since medieval times. Photo: Enrique Íñiguez Rodríguez (Qoan) (CC BY-SA 3.0) What to see and do in Jérica