It's an open secret in the wine industry, though, that a large quantity of grapes for California wine -- even of Napa Valley product (though I'm not sure how strict the rules are for appellations) are sourced from elsewhere in the state, much of it from near Fresno and Clovis. There simply isn't enough acreage within Napa Valley to supply production.

How much individualized production Frank-Lin does would be quite interesting to establish.