S.R. Tonella Cellars (SRT) is a fourth-generation Rutherford AVA family winery whose Napa roots trace to 1929, when founder Steve Tonella's grandfather Louis began working at Beaulieu Vineyard as a teenager. Today Steve hand-crafts small-lot Cabernet Sauvignon and rare varietal Sémillon from select benchland vineyards, offered through a highly allocated wine program above the Stags Leap District with sweeping views toward San Francisco.