Tir Na N'og is situated in McLaren Vale, the warm, maritime-influenced subregion of Fleurieu in South Australia. The winery focuses on Grenache, a variety that thrives in McLaren Vale's Mediterranean climate and gravelly soils. The Old Vines Grenache represents the winery's core expression—a wine that draws character from mature vines and the region's sun-drenched terroir. Grenache from this area typically shows ripe stone fruit, spice, and a supple structure suited to the warm vintage conditions. The wine has been assessed by Wine Spectator, Wine Enthusiast, and Wine Advocate.