The G.A.M. Shiraz comes from the Chinese Block vineyard which is located in the Willunga district at the southern end of McLaren Vale. The soils, which are heavy grey loam soils over sandstone, intermixed with black Biscay clay, combined with a maritime climate, contribute to an even ripening period and the development of rich fruit flavors and ripe tannins. Yield was around 2.3 tonnes an acre (40 hl/ha) from vines with an average age of 20 year old.
A dry winter, followed by heavy rains, in spring, resulted in vines with healthy, balanced canopies on moist soils. A mild, early summer leading into a warmer period during veraison stopped vegetative growth, allowing vines to channel energy into the fruit. Hot weather conditions caused some stress in late summer, with balanced vines showing great resilience and high potential. Winemakers and growers did however observe crops to be 20-30% lower than the 2005 vintage. Reds were very fragrant with good acidity abd length. Shiraz showed excellent quality. Vintage reports courtesy of the Phylloxera and Grape Industry Board of South Australia