The 2015 Château du Tertre is the grand vin from this Fifth Growth (5ème Grand Cru Classé) estate in Margaux, Bordeaux. The château sits on one of Margaux’s higher gravel rises—its “tertre,” or hillock—terrain long valued for Cabernet Sauvignon. In 2015, the blend was Cabernet-led at about 70% Cabernet Sauvignon, with roughly equal parts Merlot, Cabernet Franc, and Petit Verdot making up the balance. One merchant listing reports the alcohol at around 15%, a reminder of the vintage’s ripe profile.

Critical reception is notably strong, led by an excellent 96-point review from Roger Voss at *Wine Enthusiast*, who wrote that this “sister property to Château Giscours is firing on all cylinders with this wine,” calling it “rich, full of black-currant fruit and dark tannins,” and emphasizing that it is “dense while also supple,” with “excellent aging potential,” advising it “should not be drunk before 2024.”

Several reviewers focus on the wine’s polish and aromatic complexity. *Wine Spectator* (93 points) highlights “sandalwood, rooibos tea and warm raspberry aromas,” followed by “silky and refined waves of cassis, blackberry preserves and black currant paste,” recommending it “Best from 2022 through 2035.” James Suckling awards 95 points, describing “a rich and layered red with dark-berry and chocolate character,” “supple tannins,” and a “delicious finish of spices and walnuts,” adding that it is “so approachable now but better in 2021.”

The more sensual side of the vintage comes through in Jeff Leve’s 93-point note for *The Wine Cellar Insider*, calling it “round and silky” with “satin characteristics” and a “spicy red fruits” finish. *Decanter* (92 points) leans into the mood—“smoky oak, rich blueberries and charcoal”—while noting the fruit is “not precise so much as enticing.” *The Wine Independent* (91 points) finds a fresher register: “redcurrant jelly and kirsch,” plus “dried roses,” with an “elegant and refreshing” palate.