Johann Georg Shiraz is a single vineyard wine produced from the oldest vineyard on the Kalleske estate. This vineyard was planted in 1875 and produces very low yields of around one ton per acre from old, gnarly, dry grown vines. The topsoil is sandy with excellent clay subsoil.

The old Shiraz vines are hand picked and the grapes are gently destemmed into a small open top fermenter. The grapes are fermented for a week on skins where hand pumpovers are employed two to three times daily. The must is basket pressed while still fermenting (approximately one baume) and immediately filled to new American and French oak hogsheads where it completes.