The cradle of the Spanish mushroom Curiosity · Villanueva de la Jara, La Manchuela Conquense, Cuenca Image of Villanueva de la Jara, not of the place itself. Professional mushroom growing in Spain began in Villanueva de la Jara in the 1960s. Today button mushrooms, oyster mushrooms and seasonal wild varieties are produced here. Photo: Allpe (CC BY 3.0) What to see and do in Villanueva de la Jara