The Smith-Madrone Riesling 2014, made by Charles and Stuart Smith high in Napa Valley’s Spring Mountain District, is a wine of smlabel_lr_ries_14unimpeachable authority and integrity. Fashioned from 42-year-old vines grown on steep slopes, the wine features piercing limestone and flint minerality, softened by notes of jasmine and honeysuckle, lime peel and lychee, gently spiced pears and lightly roasted peaches, all encompassed by the grape’s signature element of petrol or rubber eraser. Incisive acidity, like some energy source from deep in the earth, animates and etches the wine, keeping it brisk and lively in the mouth, though the texture embodies an ineffable and fabulously appealing talc-like softness; the tension between the chiseled nature of its mineral and acid components and the ripeness and allure of its fruit and mouth-feel is exquisite. This quite dry wine concludes in a finish that glitters with limestone and crystallized yellow fruit. 12.8 percent alcohol. If you know of a better riesling made in California, tell me (or send it to me). Drink now through 2020 to ’24, though I suspect that the wine’s tensile structure will sustain it to 2030. Production was 1,551 cases. Exceptional. About $30.

A sample for review.