The basic-quality wine produced by each BODEGA. Crianzas are considered every-night drinking wines. They are less prestigious, less costly, and aged for shorter periods than RESERVAS or GRAN RESERVAS. While national law stipulates that crianzas must be aged for a minimum of six months in oak barrels, each DENOMINACIÓN DE ORIGEN or DENOMINACIÓN DE ORIGEN CALIFICADA can set higher standards. In Rioja, for example, a crianza must be aged for at least two years, one of which must be in oak barrels.