Doña Blanca (also known as Doña Branco) is a white Spanish and Portuguese wine grape variety that is grown primarily in the northwest Galicia region of Spain and throughout Portugal from the Douro northward. The variety is a permitted grape in the Spanish Denominación de Origens (DOs) of Valdeorras and Monterrei in Galicia and Bierzo in nearby Castile and León.In Spain, the variety is known as Doña Blanca (except in Valdeorras where it is primarily known as Valenciana, while in Portugal it goes mainly by the name Doña Branco. The grapes have thick skins, which does well in the wet maritime climate, but it can also impart some astringency and slight bitterness even with the briefest of skin contact during production due to the high proportion of polyphenols in the skin.
Various synonyms have been used to describe Doña Blanca and its wines including Alvaro de Soire, Alvaro de Sousa, Boal, Boal Cachudo, Colhao de Gallo, Dame Blanche, Doña Branca, Graciolo, Graciosa, Graziolo, Malvasia Branca, Malvasia Grosso, Moza Fresca, Santo Estevao, Valenciana, Voal Cachudo and Voal Esparrapado.
- J. Robinson Jancis Robinson's Guide to Wine Grapes pg 64 Oxford University Press 1996 ISBN 0-19-860098-4