One By Penfolds Australia Shiraz

Penfolds was founded in 1844 by Dr. Christopher Rawson Penfold at Magill Estate, Adelaide — a house whose entire identity is built on the conviction that winemaker intelligence, not fixed geography, determines quality. One By Penfolds Australia Shiraz extends

that philosophy beyond South Australia into California, applying the same multi-source blending discipline that built Grange to fruit sourced outside the Australian heartland.

Penfolds operates across Barossa Valley's ancient deep alluvial and sandy loam soils, McLaren Vale's Mediterranean-moderated fruit, and now California — each site contributing to a house style defined by mid-palate richness and structured generosity rather than single-terroir purity.

This is a deliberate transgression of the appellation-first orthodoxy dominant in both Australian and Californian fine wine.

Winemaking follows Penfolds' red wine template: temperature-controlled fermentation using acclimatised pure yeast cultures, a technique pioneered by Ray Beckwith using pH meters — a scientific intervention that predates modern winemaking norms by decades. Oak maturation aligns with house practice, prioritising fruit integration over raw wood impact.

The special feature here is categorical: this is Penfolds asserting that Shiraz is a portable variety whose character is shaped by winemaker continuity — only four Chief Winemakers in nearly 180 years — rather than by any single patch of ground.