Casa da Passarella is a winery based in the Dão region of Portugal. The producer focuses on still white wines, working with the indigenous grape varieties characteristic of this central Portuguese wine region.

The Dão region is known for its continental climate and granite-based soils, which produce wines with good acidity and mineral character. White wines from Dão traditionally emphasize freshness and structure rather than richness. Encruzado, the primary white variety of the region, is prized for its ability to develop complexity while maintaining crisp acidity and herbal, mineral notes.

Casa da Passarella's current offering includes a white wine made from Encruzado, representing the traditional white wine style of the Dão appellation.

Dão is one of Portugal's most important wine regions, located in the north-central part of the country between the Douro and Bairrada regions. The region is situated on a granite plateau surrounded by mountain ranges, including the Serra da Estrela to the east and Serra do Caramulo to the west. This mountainous terrain creates a natural amphitheater that protects the vineyards and influences the region's distinctive terroir.

The region experiences a continental climate with Atlantic influences, characterized by hot, dry summers and cold winters. The granite and schist soils provide excellent drainage and retain heat, while the surrounding mountains moderate temperature extremes and create significant diurnal variation. This combination of factors results in a long growing season that allows grapes to develop complexity while maintaining natural acidity.

Dão is renowned for its indigenous Portuguese grape varieties, particularly Touriga Nacional for reds and Encruzado for whites. Encruzado produces some of Portugal's finest white wines, known for their mineral character, citrus notes, and ability to age gracefully. The region's red wines, traditionally made from blends including Touriga Nacional, Tinta Roriz, and Alfrocheiro, are typically elegant and structured with good aging potential. The combination of altitude, granite soils, and indigenous varieties gives Dão wines their characteristic freshness and mineral backbone.