The 2019 Penfolds Cabernet/Shiraz Bin 389 is a noteworthy proprietary blend from South Australia, composed of 53% Cabernet Sauvignon and 47% Shiraz. It has been aged for 12 months in American oak hogsheads, with 25% being new oak. This wine showcases a robust alcohol content of 14.5% and is closed with a cork.

This blend draws grapes from a variety of esteemed regions, including Padthaway, McLaren Vale, Coonawarra, Wrattonbully, and Barossa Valley. The result is a wine with a potent and distinctive character, described by James Suckling as having a "strident, oak-driven nose with cedar and spice," layered over ripe blackcurrant, red plum, and cherry. He awards it a score of 94, noting its "strong tannins" and recommending it for enjoying over the next decade.

Halliday Wine Companion gives the wine a top score of 96, praising its "seamless harmony" and "resolute conviction." They highlight the balanced marriage of Cabernet Sauvignon and Shiraz, which results in a wine that is both expansive and cellar-worthy. Decanter also appreciates this balance, scoring it 95 and describing it as a "superb example" of the Australian blend, although they suggest cellaring it for further integration.

Vinous and Wine Spectator both give the wine a score of 94. Vinous notes its "expressive, smoke- and spice-accented" profile, while Wine Spectator highlights the blend's "rich, succulent flavors of wild berry" with "terrific restraint." Each reviewer suggests that the wine will benefit from aging, with Wine Spectator suggesting a drinking window through 2047.

Robert Parker's Wine Advocate scores it slightly lower at 92+, mentioning its "cool, mentholated notes" and a "silky" feel with drying tannins. Overall, the 2019 Penfolds Bin 389 is highly regarded by experts for its complexity and potential for aging.