"The aptly named Vinho Verde (Green Wine) signifies that the grapes are picked early and the wine is drunk young. The Portuguese home market consumes more red than white wine, so the white Vinho Verde is largely exported. It is mainly yellow in color but some have a suggestion of slight green. They are classified as semi-sparkling wines and have a slightly biting or prickling quality and a refreshing twang. The vines are kept clear of the ground by being draped on trees or specially-constructed trellises. This serves a double purpose; firstly by freeing the land beneath for cultivation and, secondly, by protecting the vine against damp and parasitic rot. These wines have a lower alcohol content. The appellation of Vinho Verde extends from south of Porto up to the Spanish border."