EMH’s vineyard is situated on the valley floor near Pickett Road in Calistoga, just east of the Silverado Trail. Pocketed by the Palisades Mountains to the north and Diamond Mountain to the south, the tiny vineyard of just under an acre produces outstanding Cabernet Sauvignon fruit. The vines – clone 4 – are planted in soil which is primarily gravelly loam, which is characteristic of this area. It enjoys the climate of its more well-known neighbors including Eisele Vineyard, Frediani Vineyards, and Kenefick Ranch.

The winemaker for EMH’s first nine vintages was Art Finkelstein. Art founded the well-known Whitehall Lane Winery, and after he sold that winery, Art opened Judd’s Hill Winery and custom crush facility. As the business grew, Art hired Kenn Vigoda to assist him in the winemaking, selecting someone whose philosophy of winemaking matched his own. Sadly, Art succumbed to cancer in 2010, leaving his son Judd to run the business and putting Kenn at the helm of Judd's Hill's winemaking process. Kenn's careful guidance allowed the elegant, finesse style character of EMH's "Black Cat" to continue in successive vintages. In 2016, Kenn retired and the associate winemaker, Eric Lyman, was named Winemaker of Judd's Hill and the custom crush operation. Eric's guidance in the cellar continues the fine collaboration between EMH and the cellar staff at Judd's Hill.

EMH receives expert assistance in the vineyard from Josh Clark and his crew at Clark Vineyard Management. The Clark people understand EMH's tiny vineyard (soil, vines, and superb micro-climate), having performed contract work at EMH for at least a decade.