In Spain , this refers to a wine with defined higher requirements in terms of vinification, alcohol content and aging (ripening period in barrel and bottle) than in normal bottlings. The regulations mainly affect red wines, with white and rosé wines, the specifications for the expansion are usually lower. A Reserva must have matured for at least 36 months, of which at least 12 months in oak barrels and the rest in the bottle. The highest level of Gran Reserva must be at least 60 months matured, of which at least 18 months (24 months until 2005) in oak barrels and the rest in the bottle. Not infrequently, these wines are the best vintages and / or best grapes one vintage, Unlike one Crianza (Level below Reserva) there are no special regulations of individual wine-growing areas at Reserva and Gran Reserva. Renowned wineries often exceed these requirements considerably. The famous top product "Gran Reserva 890" of the winery La Rioja Alta For example, at least six to eight years matures in barriques and another six years in the bottle.
In Portugal , the Reserva level may only be used for a "special vintage of outstanding quality". A red wine must have ripened or been stored for three years (one of which in the bottle), one white wine a year (of which six months in the bottle). If the alcohol content is at least 0.5% vol more than the standard DOC requirement, a Portuguese Reserva garrafeira call.