Ridge Vineyards is a California winery specializing in Cabernet Sauvignon, Zinfandel, and Chardonnay wines. Ridge produces wine at two winery locations in northern California. The original winery facilities are located at an elevation of on Monte Bello Ridge in unincorporated Santa Clara County in the Santa Cruz Mountains AVA, south of Los Altos, California and west of Cupertino, California. The other Ridge winery facilities are at Lytton Springs in the Dry Creek Valley AVA of Sonoma County. Ridge Vineyard's 1971 Monte Bello Cabernet Sauvignon gained prominence for its fifth-place finish in the 1976 "Judgment of Paris" wine tasting. History Although Ridge Vineyards was founded in the early 1960s, wine production at the winery's Monte Bello location has a much longer history. Grapevines were first planted on Monte Bello Ridge by Osea Perrone, a doctor and prominent member of the northern California Italian immigrant community, in 1885. The first Monte Bello wine was produced in 1892. Following Prohibition, the vineyard at Monte Bello passed through the hands of several amateur winemakers until it was purchased in 1959 by David Bennion, Charles Rosen, Hewitt Crane, and Howard Zeidler, all engineers at nearby Stanford Research Institute. Ridge Vineyards was bonded and produced its first commercial wine, a Monte Bello Cabernet Sauvignon, in 1962. According to a 1987 New York Times article, Ridge Vineyards was acquired by a Japanese company. "The new owner is Otsuka U.S., a subsidiary of the Otsuka Pharmaceutical Co Ltd, a producer of nutritional drinks and other pharmaceutical products. Otsuka operates an experimental wine-making center near Fuji, in Japan." The international reputation of the Monte Bello wine produced by Ridge Vineyards was established when it achieved fifth place in the "Judgment of Paris", against nine other French and California wines. Monte Bello Cabernet Sauvignon was acclaimed in subsequent competitions, including The Judgment of Paris 30th Anniversary, the 30th anniversary retesting of the same red wines evaluated in the 1976 Paris wine competition. In this blind tasting, held both in the United States and in the United Kingdom, judges in both countries ranked Ridge Monte Bello number one among all the wines judged. Ridge Vineyards produced its first Zinfandel in 1964. Beginning in 1966, the winery began sourcing some grapes for its Geyserville Zinfandel and other wines from vineyards in Sonoma County. In 1991, Ridge Vineyards purchased the Lytton Springs vineyard in the Dry Creek Valley AVA. The winery produces wine