The Kaesler family sprung from Silesian pioneers who migrated to the Barossa in the 1840s. The ancient vines on the 1893 block have deep roots, permitting a greater uptake of minerals, heightening the complexity of the Old Bastard. A greener farming approach has yielded a wine which is enormously hard to interpret when young. A French technique known as eleve-en-chene is employed throughout the vinification, assisting the skilled vignerons who are at a loss to explain what they can't see and don't understand. Old Bastard is matured in the Kaesler's underground cellar for eighteen months in a selection of choice Burgundian oak barrels, bottled a la natural, without any fining or filtration.