The 2021 Hourglass Blueline Vineyard Cabernet Sauvignon is a red wine from the Napa appellation within California's North Coast region. Produced by Hourglass, this wine features a blend dominated by 80% Cabernet Sauvignon, complemented by 10% Petit Verdot, 7% Malbec, and a small portion of Cabernet Franc. With an alcohol content of 14.8%, this wine is a solid representation of its varietal and region.

Professional reviewers have given this wine high marks, with Jeb Dunnuck awarding it 96 points. Dunnuck notes that the wine offers a complex bouquet of "blackcurrants, bright black cherries, violets, and bouquet garni," all balanced with "beautifully integrated oak." He describes the wine's palate as "medium to full-bodied" with a "pure, elegant, yet concentrated style." Dunnuck highlights that the 2021 vintage shows a denser, more concentrated character while maintaining "a beautiful sense of finesse and elegance." According to Dunnuck, this wine will benefit from 2-3 years of bottle aging and has the potential to evolve for 20-25 years.

Vinous' Antonio Galloni also provides a favorable review, awarding the wine 94 points. Galloni describes the 2021 Cabernet Sauvignon Blueline Estate as "a heady, racy wine" with "super-ripe dark cherry, tobacco, scorched earth, and licorice" adding complexity. He observes the wine's "Calistoga-savory/earthy intensity" and notes that it came together very well in the cellar, indicating a successful production process.

Both reviews highlight the wine's nuanced flavors and aging potential, with Dunnuck emphasizing its elegance and Galloni pointing out its intensity and complexity. The wine is available in limited quantities, with only 850 cases produced, making it a sought-after choice for collectors and enthusiasts alike.

Overall, the 2021 Hourglass Blueline Vineyard Cabernet Sauvignon stands out for its balance of concentrated flavors and finesse, earning high praise from respected wine critics.