Onda d’Oro and Vaso, produced by Korean-owned Dana Estates, were designated as official wines of the G-20 Summit.When Korean vintner Lee Hi-sang first went to Napa Valley during the late 1990s to buy land, there were few people who wanted to sell to a foreigner with no experience running a winery. More than a decade later, Onda d’Oro -a cabernet sauvignon produced by Dana Estates, Lee’s winery in Napa Valley, Calif. - has been designated as an official wine of the G-20 Summit in Seoul.