You won’t find a sauvignon blanc much fresher than the just-released Stewart Cellars Sauvignon Blanc 2016, Napa Valley. The small winery, Stewart_Logofounded in 2000, is a close-knit family-run company whose winemaker is son-in-law Blair Guthrie, working with ubiquitous consultant Paul Hobbs. For its first foray into the variety, the winery whole-cluster pressed the grapes and fermented half in barrel and half in stainless steel. The color is palest straw-gold; arresting aromas of lime peel and guava, heather and hay are pert and lively and infused with notes of greengage and fig, fennel and lilac. On the palate, this wine runs fleetly and lightly, with a texture that’s partly lush and talc-like and partly lean and lithe, buoyed by bright acidity for pinpoint balance. The effect is quite dry and sprightly but juicy with citrus and stone-fruit delicately spiced with cloves and lent complexity by a burgeoning grassy-lemongrass element. 13.5 percent alcohol, and a delicious reflection of thoughtful winemaking. Production was 771 cases. Now through the end of 2018. Excellent. About $25.

A sample for review.