Established by Brian Croser in 1976, Petaluma is one of Australia's most prominent wine companies. The pre-eminent quality of Petaluma's wines is based on distinguished vineyard sites for each of the chosen varieties, in four important South Australian wine regions: Piccadilly Valley in the Adelaide Hills, for Pinot Noir and Chardonnay; Mount Barker in the Adelaide Hills, for the Rhone varieties Viognier and Shiraz; Clare Valley, for Riesling' and Coonawarra, for Cabernet Sauvignon and Merlot