other located on property owned by the winery near Murphys. The winery purchases grapes from ten other vineyards in Calaveras County and three in other parts of California. Silvaspoons Vineyard, located in the Alta Mesa AVA, is the only vineyard outside of the Sierra Foothills AVA from which Twisted Oak Winery sources grapes. Custom releases To help promote the winery, owner Jeff Stai has personally donated about 50 bottles of wine each year for use as trophies in recognition of winning category performances in the California QSO Party, an annual amateur radio competition. About half of the wines are awarded to competitors in California and half to those outside of California. The wine trophies are personalized with custom front labels. See also California wine References External links El Bloggo Torcido official winery blog Calaveras Winegrape Alliance Wineries in California Companies based in Calaveras County, California Food and drink companies established in 2001