Dr Bertus Boshoff and his wife Ebby own the Thonningii wine farm in the Otavi Valley. Boshoff, a medical doctor by profession, is passionate about wine, and began experimenting with grapes in 1998, finding that Shiraz-making grapes were the best suited for his farm. In 2006 he began producing Viognier grapes for a white wine which the winery began producing five years later, along with a Rosé blend of Shiraz and Viognier . Thonningii offers tours, wine tastings and home made breads and meat products. Tours on appointment only.