Wine Australia says that Grenache 'was the most widely planted variety,' but the amount of Grenache crushed in Aus in 2012 was sadly one-fifth of the quantity harvested in 1979. Meaning somewhere along the line, Australian winemakers fell out of love with the grape, combined with the drop in demand for traditional fortified 'Port styles' based on the variety, which must have been removed in favour of Shiraz, for example among others, and/or very old vines died and weren't replaced. The Australians also claim they have 'some of the oldest vine varietals in the world, red and white,' in South Australia essentially where a successful quarantine policy has kept out the vine-destroying phylloxera louse, including cherished senior-citizen Grenache in the McLaren Vale.