Penfolds Reserve Bin A Chardonnay has evolved into a wine that is now a distinctive, single-region style in its own right, with a contemporary and expressive Adelaide Hills chardonnay persona. Fruit is hand-picked into small bins and then whole-bunch pressed. A portion of the juice is incrementally filled to barrel directly from the press and allowed to undergo a natural fermentation, sans inoculation. Every new and seasoned French oak barrique is its own unique 225-litre ferment. Enhanced mouthfeel and complexity is achieved by fermenting and maturing on solids with sensitive, intermittent yeast lees stirring. 100% malolactic fermentation (all natural).