Rioja [ˈrjoxa] is a wine region, with Denominación de Origen Calificada (D.O.Ca. Qualified designation of origin) named after La Rioja, in Spain. Rioja is made from grapes grown not only in the Autonomous Community of La Rioja, but also in parts of Navarre and the Basque province of Álava. Rioja is further subdivided into three zones: Rioja Alta, Rioja Baja and Rioja Alavesa. Many wines have traditionally blended fruit from all three regions though there is a slow growth in single-zone wines.
The three principal regions of La Rioja are Rioja Alavesa, Rioja Alta and Rioja Baja with each area producing its own unique expression of Rioja wine. Most of the territory subjected to the Rioja Protected designation of origin is in the La Rioja region, even though their limits do not coincide exactly. There is a narrow strip in the left bank of the Ebro river lying in the southernmost part of Álava included in the La Rioja wine region, whereas the south-southwestern part of the La Rioja region is not a part of this Protected designation of origin.
A distinct characteristic of Rioja wine is the effect of oak aging. First introduced in the early 18th century by Bordeaux influenced winemakers, the use of oak and the pronounced vanilla flavors in the wines has been a virtual trademark of the region though some modern winemakers are experimenting with making wines less influenced by oak. Originally French oak was used but as the cost of the barrels increased many bodegas began to buy American oak planks and fashion them into barrels at Spanish cooperages in a style more closely resembling the French method. This included hand splitting the wood, rather than sawing, and allowing the planks time to dry and "season" in the outdoors versus drying in the kiln. In recent times, more bodegas have begun using French oak and many will age wines in both American and French oak for blending purposes. In the past, it was not uncommon for some bodegas to age their red wines for 15–20 years or even more before their release. One notable example of this the Marqués de Murrieta which released its 1942 vintage gran reserva in 1983 after 41 years of aging. Today most bodegas have shifted their winemaking focus to wines that are ready to drink sooner with the top wines typically aging for 4–8 years prior to release though some traditionalists still age longer. The typical bodega owns anywhere from 10,000 to 40,000 oak barrels.
In Spain, wineries are commonly referred to as bodegas though this term may also refer to a wine cellar or warehouse. For quite some time, the Rioja wine industry has been dominated by local family vineyards and co-operatives that have bought the grapes and make the wine. Some bodegas would buy fermented wine from the co-ops and age the wine to sell under their own label. In recent times there has been more emphasis on securing vineyard land and making estate bottled wines from the bodegas.
Like most Spanish wine regions, Rioja is an integral part of Spanish culture and cuisine. In the town of Haro there is an annual Wine Festival that is noted for its Batalla de Vino where participants conduct a food fight of sorts with wine.