NEWS Media Relations A doctor’s winery dream has come true. Growing grapes in Calaveras County for 10 years was not enough for Dr. Ian Renner. His dream was to have a World-Class winery at sometime. That dream has come true. The new Renner Winery Tasting Room is now open in a vintage Town Square located in Copperopolis, California. It is in this quaint town where one can taste the exquisite varietals created by Winemaker Brett Keller, whose talents and attention to detail shine. Renner Winery is truly a great new find in Calaveras County. For the press release of the Tasting Room's opening click here.