 At over a 160 years of age, it is still far behind what is believed to be the world's oldest single grapevine, a Žametovka vine growing in Maribor in Slovenia that was planted over 400 years ago.Still, while the Slovenian vine only produces enough fruit to make around 25 liters of wine that is not available for public sale, the Shiraz block of Turkey Flat vines produces several cases of wines for commercial use.The 2002 vintage of the old vine Shiraz was even favorably reviewed by American wine critic Robert Parker who described the wine as having ""glorious fruit with notes of crème de cassis, raspberry liqueur and licorice.""