Wine jars of Colmenar de Oreja Food and drink · Colmenar de Oreja, Las Vegas, Madrid The town was for centuries the great jar-making centre of Castile: its potters modelled bulging clay vessels of up to five hundred arrobas in which the wine of the comarca fermented and was kept before the arrival of steel. Photo: Poniol60 (Wikimedia Commons) (CC BY-SA 3.0) What to see and do in Colmenar de Oreja