San Prospero Martelli Passerina Marche 3 Litre Box Wine. An organic white, 100% certified organic, unfined, unfiltered and vegan. Made with Passerina grapes. Passerina is a very ancient local white grape cultivar from the Central-Adriatic region of Italy, which is known under many different appellations in other regions. The main production areas are Le Marche and Abruzzo, where the influence of the sea adds further saltiness and pleasantness.