Chorizo Day Food and drink · Ólvega, Moncayo, Soria Image of Ólvega, not of the place itself. The village devotes a day to the chorizo of the pig slaughter, heir to the traditions of butchering and marinating the pig that stocked the family larder all year round in the villages of the Moncayo. Photo: Miguel Ángel García. (CC BY 2.0) What to see and do in Ólvega