There’s no question that California leads this country’s wine production — certainly in quantity and, this newspaper would argue, also in quality. [...] although California wine production has grown more than 60 percent in the past 20 years, the United States as a whole has grown even more dramatically, producing 75 percent more wine in 2015 than in 1995. In 2015, Chardonnay represented 16.4 percent of all grapes vinified in California, with 633,572 tons crushed. Twenty-one percent of all wines sold in U.S.