Douro (also referred as Alto Douro) is a Portuguese wine region centered on the Douro river and has the most highest wine classification as a Denominação de Origem Controlada (DOC). The region is associated with Port Wine Production, and produces as much table wine as it does fortified wine, and the principal grape varieties include black grapes Bastardo, Mourisco Tinto, Tinta Amarela, Tinta Barroca, Tinta Cao, Tinta Roriz, Touriga Francesa, Touriga Nacional, and white grapes Donzelinho Branco, Gouveio, Malvasia Fina, Rabigato, and Viosinho. The Douro wine region is situated around the Douro River Valley, is sheltered by Atlantic winds by the Marão and Montemuro mountains and has a continental climate, with hot and dry summers and cold winters. Douro is subdivided into three subregions: Baixo Corgo, Cima Corgo, and Douro Superior. The following Green Wine selection is composed by White Wine, produced exclusively from white grapes juice, and the consumption is ideal with light meals and aperitifs. White wines are more refreshing, lighter in both style and taste, and are ideal to drink in the spring and summer occasions.