D.O. Ribera del Duero adheres to and closely monitors strict quality controls. During harvest each winery is assigned a surveyor by the Consejo Regulador of D.O. Ribera del Duero, the governing body that oversees all aspects of the viticultural and winemaking process. The Consejo regulates where the grapes come from, the varieties used, the percentages allowed, vineyard practices including pruning, density, and yields, winemaking procedures, alcohol levels and labeling. In practice, the wineries consistently outperform the high standards set by the Consejo in order to maximize quality production.

There are several designations for wines that are produced in the Ribera del Duero: Joven, Crianza, Reserva, Gran Reserva, and Rosado.

• Joven:  Joven wines have no oak at all. “Joven Roble” and “Joven Barrica” are interchangeable terms that refer to wines aged for a short period of three to six months in oak, released soon after harvest. All wines with a Joven classification are fruity and vibrant, and meant to be consumed quite young.
• Crianza:  Aged two years, a minimum of twelve months in oak barrels. They can be released after the first of October, two years after the harvest. These wines have well balanced tannins with a full-bodied and velvety mouthfeel.
• Reserva:  Aged three years, a minimum of twelve months in oak barrels; can only be placed on the market after the first of October of the third year after the harvest.  After twelve months in oak barrels, Reserva wines are then bottled and laid down in winery cellars, producing wines that are ready to drink once they enter the market. Reserva wines are elegant and intense, with a rich aftertaste that is long and persistent.
• Gran Reserva:  Wines of outstanding quality, made in select vintage years only. Aged a minimum of sixty months, with twenty-four months in oak barrels minimum followed by additional bottle aging. First release is allowed after the first of October, five years after the harvest. After twenty-four months in oak barrels, Gran Reserva wines are then bottled and laid down in winery cellars, producing wines ready that are ready to drink at the time of release. Gran Reserva wines are complex and structured, with great balance and vitality.
• Rosado:  Rosé wines are fermented without the skin of the grape and are available shortly after the harvest. Easy to enjoy, with refreshing wild-berry flavors.

The use of oak is closely regulated by type and classification. In addition, oak barrels are changed every four years on average.

Maximum Yields are limited to 7,000 kilograms per hectare (3.1 tons per acre). In practice, the average yields for the past twenty-two years have rarely exceeded 3,600 kilograms per hectare (1.6 tons per acre),  as grape-growers reduce quantity, driven by a pursuit of quality.