Grgich Hills Estate is a historic fixture in Napa Valley, founded by Miljenko "Mike" Grgich in the Rutherford AVA in 1977. The winery produces an array of wines from five estate vineyards located throughout the valley. Mike Grgich gained notoriety for crafting the 1973 vintage of Chateau Montelena Chardonnay that ranked top at the famous Judgment of Paris tasting in 1976, beating out some of Burgundy's most famous white wines. As a result, Grgich Hills Estate's Chardonnay is one of the more popular wines in the range, sourced from cooler vineyards in American Canyon and Carneros. With no malolactic fermentation, this is a fresher style of Chardonnay with bright acidity. As with most Napa wineries, Grgich also produces a line up of rich and bold red wines, including a Zinfandel, Cabernet Sauvignon and Merlot. The Grgich Estate Zinfandel is sourced from the vineyard in Calistoga, Napa's warmest AVA. The Merlot and Cabernet Sauvignon are sourced from a few estate vineyards, and are blended together each vintage to yield the optimal result. Estate vineyards are cultivated in Calistoga, Rutherford, Carneros, and Yountville with 163 acres (65ha) of the total 366 acres (148ha) in American Canyon.