Oil of the Sierra de Algairén Food and drink · Alpartir, Valdejalón, Zaragoza Image of Alpartir, not of the place itself. On the slopes of the sierra of Algairén a dry-farmed olive grove of the empeltre variety is maintained whose olives are milled in oil mills of the comarca. The oil, of low acidity and almond flavour, is used raw over vegetables and in the migas. Photo: Cpalpartir (CC BY 4.0) What to see and do in Alpartir