The Bin 311 style typically exhibits a mineral acid backbone, complemented by barrel fermentation & maturation in seasoned oak. Minimal filtration is employed, preserving elegant fruit flavours. Bin 311 Chardonnay is sourced to style from a single, cool-climate (and some would say risky, marginal) region. In 2015, fruit sourcing has again come from Tumbarumba one of Australias most exciting, cool-climate, high-altitude, viticultural districts. Penfolds has worked with Chardonnay from Tumbarumba since the early 1990s.