Ripasso is a traditional technique that promotes a second fermentation through the wine’s contact with warm dried grape skins from which Amarone has been pressed. This practice increases slightly the alcoholic content and enriches the wine with a greater concentration of sugar, glycerine, polyphenolic substances and aromas. The Zonin Valpolicella Ripasso Superiore wine then matures in 30-hectoliter (660 gallon) Slavonian oak barrels for 1 year and for a further six months in bottle.