Fruit is sourced from the distinguished Justin Vineyard in the Frankland River region. Soils are largely degraded granite gravels, some of the oldest in the world. Even within the single vineyard, particular blocks of vine, more than thirty five years of age, known as patches 12 and 13, are set aside exclusively for Jack Mann. Grapes are hand harvested, hand sorted, crushed and vinified in small open top fermenters. Caps are plunged by hand before gently pressing the wine into new and one year old French oak barrels from choice Bordeaux cooperages for eighteen months maturation, before assemblage, fining and bottling without filtration. Only a few hundred cases are ever made.