¥Barrel size (225-l), and
barrel ageing times in Rioja are strictly controlled by DO laws. Crianza and Reserva must spend 1 year in oak; Grand Reserva, at least
2 years. American oak is favored.
¥Oak-aged Rioja must also be
aged in tanks or bottles for specified times: Crianzas for 1 year, Reservas for 2 years, and Grand Reservas must spend 3
years in the bottle before release.
