De Bortoli can draw on precious old stocks from which to assemble Old Boys Tawny. Topping up the wines as they age in barrel is an important part of the process. Some of the older barrels were close to forgotten when inventoried by De Bortoli and this has kept the winemakers on their toes as they balanced the fluctuation of flavour from sample to sample. It is essential for grapes to ripen on the vine until an intense concentration of flavours have developed and the fruit is very sweet. After crushing and partial fermentation to retain some residual sugars, the wine is pressed and fortified with neutral spirit prior to maturation in a selection of large and small format oak casks. Alcohol 19.5%