Kevin Judd was the first winemaker in the famous Cloudy Bay area. His role as precursor has made him a reference point in terms of style for the wines of the Malborough region. He has also contributed to raising the reputation of these wines which have a nice minerality, the right acidity and an exuberant aromatic expression. By founding Greywacke in 2009, Kevin and Kimberley Judd realized a life-long dream of theirs. Located in Malborough, the northernmost point of the South Island of New Zealand, Greywacke's vineyard has the perfect climate: in one of the sunniest places on the planet, it is sheltered from the rain by the Richmond Ranges. Greywacke's name comes from the pebbles which are a part of the geological composition of the region. The domain works to achieve the perfect ripeness, with a different vision for each parcel, as the domain is scattered throughout the region. The two main varieties and Sauvignon blanc and Pinot Noir.

Wild Sauvignon is produced from vines planted in a particularly cool vineyard, thanks to the layers of clay in its soil. The bouquet features the immediately recognisable exuberance of Sauvignon Blanc, which is nonetheless characterised by its great freshness. The vegetal and floral aromas on the nose are complemented on the palate by tart aromas of citrus and white fruit such as pear. Overall, the mouthfeel is generous, dense and accomplished. On the palate, the wine finishes with a lingering impression of menthol and grilled almonds. The name "Wild Sauvignon" derives from the fact that fermentation is conducted with native yeasts only. With its judicious six-month élevage in barrique barrels (less than 10% new wood), this is a wine with a certain amount of ageing potential.