Seppelt operates in Great Western, a cool-climate pocket of the Grampians in Western Victoria. The region's elevation and continental conditions suit Shiraz and Riesling—varieties that define the winery's portfolio. St. Peters Grampians Shiraz, the flagship red, expresses the region's capacity for structured, age-worthy Syrah. The Late Harvest Riesling and Drumborg Vineyard Riesling showcase the aromatic precision and natural acidity that cool-climate Riesling achieves in this corner of Victoria. Wine Spectator, Wine Advocate, and Decanter have rated these wines at the highest levels, reflecting their technical depth and regional authenticity.