Hourglass is a Napa Valley winery with vineyards in St. Helena and Calistoga. It is owned and operated by Jeff Smith and his wife Carolyn. The Hourglass debut release was in 1997. With additional investors they purchased more property in 2006 and built a state-of-the-art winery. Bob Foley was the winemaker from 1997 through 2010. In 2012 Tony Biagi took over as winemaker. Biagi also is winemaker for the company’s Blueline Vineyard in Calistoga. Biagi is also winemaker for The PlumpJack Group, owner of several wineries. Hourglass grows Cabernet Sauvignon, Cabernet Franc, Merlot, Petit Verdot and Malbec. The estate’s flagship wine is Cabernet Sauvignon. Robert M. Parker Jr. has written that the Hourglass wines are “frequently brilliant.” Hourglass makes a second label called HG III.