With his new exclusive-access tours, Doug White elaborates on the Napa Valley wine tasting experience.

Napa Valley's wineries number in the hundreds yet most first-time visitors only catch a glimpse of the surface of this acclaimed winemaking capital. The prerequisite stops at Opus One Winery, The French Laundry and Auberge du Soleil Resort are easy enough to conjure up at the behest of a seasoned concierge, provided he makes that request three months in advance and money is no object. But to really delve into Napa Valley's smaller boutique wineries, one needs the assistance of a connected native.