A timeless classic for patient readers with cold cellars, the 2019 Langoa Barton is performing beautifully in bottle, unwinding in the glass with a rich bouquet of cassis, plums, cigar wrapper, pencil shavings and loamy soil. Medium to full-bodied, deep and elegantly muscular, its concentrated core of fruit is framed by lively acids and ripe, powdery tannins that assert themselves on the youthfully firm finish. Forget it for a decade and reap the rewards for the following four.