Tres Sabores is a small certified organic winery just south of St. Helena founded and operated by Julie Johnson. Johnson was already a California vigneron when she purchased the property in 1987. In 1981 she had been one of the founders of Frog’s Leap Winery and she also was a founder of Women for WineSense, now a national organization for women in the wine industry. Johnson was a pioneer in moving toward organic winemaking. In 1991 Tres Sabores became Napa’s first certified organic winery. The estate has 13 acres of vineyards planted mostly to Zinfandel with smaller amounts of Cabernet Sauvignon, Petit Verdot and Petite Sirah.