Achaia Clauss operates in Patras, within the Achaia region of Greece's Peloponnesos. The winery focuses on Mavrodaphne, a dark grape native to the area that produces fortified and still wines with depth and structure. The flagship Μαυροδάφνη Πατρών (Mavrodaphne Patras) has been assessed by Wine Enthusiast, Wine Spectator, Falstaff, and Wine Advocate. The winery also produces a standard Mavrodaphne expression and an Old Reserve Mavrodaphne of Patras, each representing different iterations of the varietal's character. Mavrodaphne from this region typically shows richness and complexity, with the fortified versions offering notes of dried fruit and spice. The winery's portfolio reflects the traditional strengths of Patras as a source for this distinctive Greek varietal.