An original expression of the Beira Interior, this sparkling wine is made from both red and white grape varieties with excellent natural acidity, vinified as a white wine. It follows the traditional method, with secondary fermentation in bottle using indigenous yeasts and manual riddling. Ripeness is strictly monitored to obtain base wines with excellent natural acidity, all vinified as white. After blending, the base wine undergoes bottle fermentation with free yeasts, followed by manual riddling. During disgorgement, the dosage was topped up exclusively with the same wine.