Trivium is a collaboration of Napa Valley grape-grower Doug Wright, winemaker Jack Stuart and marketer Stu Harrison. The trivium.jpg winery’s debut product is Trivium Les Ivrettes Vineyard Cabernet Sauvignon 2005, St. Helena. Composed of 100 percent cabernet sauvignon grapes, the wine spent 19 months in oak, 85 percent French barrels, 60 percent new.

This is a great Napa Valley cabernet sauvignon. Nothing opulent or flamboyant here, the wine beautifully balances elegance and power and seems to draw for its dense and concentrated character upon the nature of the soil and strata on which the vineyard stands.

The bouquet is deep and rich, packed with cedar and lead pencil, wheat-meal and walnut shell, and black currants slightly macerated and roasted. This is a cabernet of awesome purity and intensity that gradually unfurls a seamless amalgam of ripe black fruit, formidable but smooth tannins and polished oak, all enlivened by plangent acidity. The presense, the substance are tremendous, yet the wine feels neither obvious nor ponderous. The finish brings in some austerity, along with notes of fruit cake and baking spice. A terrific achievement that devotees of classic Napa cabernet won’t want to miss. Best from 2010 through 2015 or ’16. Excellent. About $60.

Production was 318 cases, so mark this wine Worth a Search.