This is probably the most famous and best known DO wine-growing region in Spain, and it has some special geographic features. Although the majority of the vineyards, with a total area of 62.000 hectares, is located in the autonomous La Rioja region in north-east Spain, but parts of the DO are also located in the Basque region (the sub-zone Alavesa) and Navarra. The region has a very long tradition of viticulture. Numerous fermentation troughs hewn out of stone have been found, attesting to wine production in ancient times. The efforts to define the area of origin and to produce high quality likewise have a long tradition. As early as 1560, wine producers agreed on a common brand to be used to mark the barrels (and guarantee the identity of the contents) containing wines from this region. In 1635, the mayor of Logroño even banned carts and carriages from driving on roads that led past wineries, for fear the vibrations caused by the carts might damage the musts, and thus adversely affect the maturation of the wines in the cellars along the way. The first written document indicating quality controls and a guarantee of wine quality dates back to 1650. In Jahre 1787, the „Real Sociedad Económica de Cosecheros de Rioja†(Rpyal economic association of Rioja wine producers) was founded with the objective of promoting viticulture, winemaking and the wine trade. The tradition of the Batalla del Vino (Battle of the wines) was established in the town of Haro in the early 19th century, this major town festival is still celebrated each year.
Rioja Alta: This zone has a total vineyard area of 24.000 hectares, the main centre is Haro, the zone is located to the south of the Ebro river and to the west of the city of Logrono. The climate is influenced by the Atlantic ocean, with hot summers, mild autumns and cool winters. The vineyards are located on sedimented soils, mixed with clay, and with a high content of iron and limestone. The dominant grape variety is Tempranillo, followed by Mazuelo and Graciano, all of these have slightly thicker skins than in the other two sub-zones of Rioja, producing slightly more extract. The best Rioja wines, those with most finesse, are produced here. The wines are full-bodied with a high level of tannins and acidity, they are ideally suited for barrel maturation.
Rioja Alavesa: This zone has a total vineyard area of 12.000 hectares, and is located to the north of the Ebro river in the Basque region. The climate is similar to that of Rioja Alta, with predominantly limestone and clay soils. The key grape variety is Tempranillo, which as a slightly thinner skin here. The dominant style here is of light-bodied, spicy, fruity red wines with a medium acidity and medium alcohol content. They can be consumed as young wines, but are also suitable for barrel maturation. Generally speaking, their maturation potential is not as great as that of the wines from Rioja Alta.
What used to be a general tradition, that of covering Rioja bottles in a mesh of gold-coloured wire, is only maintained today by a few producers (see unser Alambrado). The traditional method of producing the wines, which involves extended maturation in 225 litre barriques of American oak is still the dominant style. This method results in wines with an almost brownish colour, typical notes of vanilla, spice and lemon, as well as soft tannins. More recently, a shorter period in barrel followed by bottle maturation is being seen increasingly, the objective is to make the wines drinkable at an earlier stage. Generally speaking, the period of barrel maturation varies from one to three years , followed by a period of six months to six years in bottle, to complete the maturation. The wines are divided into four categories, depending on the ageing and maturation process. The maturation periods stated are minimum periods, many wineries still extend this period considerably:
Gran Reserva: Red wines must be matured for a minimum of 24 months in barrel and a further 36 months in bottle. Some bodegas produce long-lived white wines, these must be matured for a minimum of 6 months in barrel and 42 months in bottle. See also under Reserva.