The 2018 Yalumba The Octavius (Shiraz Old Vine) is a notable Syrah from South Australia's Barossa Valley, with a blend of 69% Eden Valley fruit and 31% Barossa Valley fruit. This wine, sealed under natural cork and boasting an alcohol content of 14.5%, has received high praise from several reputable reviewers.

Decanter awarded it a score of 95, highlighting its "big body" and "supple texture." The review notes that the wine has "bright blueberries among the Barossa Valley's blackberry grunt," with a "soft lick of vanilla" adding finesse. The oak influence is notable, as the wine matures in eight-stave French oak barrels for 21 months. According to Decanter, the wine is a "power-packed statement" that has dialed down its aggression to offer a more refined experience.

James Suckling rated it 93, describing it as an "old vine Barossan shiraz from a stellar vintage." He appreciated its "damson, violet and black olive" notes, and while he praised its "well wrought tannins," he was less enthusiastic about the "eucalyptus across the finish," which he found to be a "drying agent."

Robert Parker's Wine Advocate gave it an impressive 96+ points, with the reviewer noting flavors of "coffee grounds, dark chocolate, mulberry compote and black olive tapenade." The wine's "big bold forest berry flavors" are balanced by a "firm hand of tannic structure," making it "really good, satisfying, mouthfilling, delicious."

Vinous also rated it 95, describing it as a "powerhouse and bold edition of Octavius." The reviewer noted its "punchy sweet-fruited flavors" and "savory meat stocks in the background." The wine's firm tannins and long finish suggest it will be best enjoyed after a decade's rest.

The Wine Independent gave it a 96, praising its "fantastic freshness and vibrancy" and "velvety tannins." The review highlighted its "black cherries, warm plums, and fruitcake" notes with hints of "licorice, lilacs, peppered salami, and tar."

Lastly, Jane Anson awarded it the highest score of 97, describing it as having "waves of charred sandalwood, white pepper, sage, liquorice root, and juicy black fruits." She noted its "muscular tannins" and the wine's ability to age slowly, still being in its primary phase even at five years old.

Overall, the 2018 Yalumba The Octavius is a well-regarded Syrah that balances bold flavors with refined tannins, making it a standout choice for collectors and enthusiasts alike.