Coturri Winery is located above the town of Glen Ellen in the appellation of Sonoma Mountain. The winery was founded in 1979 by Harry "Red" Coturri and his sons, Tony and Phil. Red began making wine with his father, Enrico Coturri in San Francisco during Prohibition and the Great Depression who immigrated to America from Farneta, Italy in 1901. Today, Tony Coturri is the custodian of the wine made at Coturri Winery and remains true to the methods of his predecessors and his lineage. Since 1964, Tony has made natural wine that includes the process of natural yeast fermentation, no sulfites, aging in oak barrels, and always with grapes from organic vineyards. Coturri wines consist of just grapes, pure and simple. "For almost 40 years we have been stewarding terroir-driven wine on Sonoma Mountain, above the tiny hamlet of Glen Ellen in Sonoma County. Our small estate vineyard, comprised of Zinfandel, is dry farmed and head pruned in the traditional Italian goblet style. Our grapes are never treated with pesticides, fungicides, or herbicides. We use Indigenous yeast. We do not fine or filter or use SO2. No additions or manipulations of any kind are made and we believe our wines are a testament to the longevity potential of wines made naturally."