Uncorked travels to Sonoma, to learn about northern Californian wines. First, the show takes a look at the history of the region, learning about Agoston Haraszthy, the eccentric Hungarian immigrant and chemist who moved to north California in 1849 and helped launch wine production in the area. Then we meet self-appointed "Queen of Pinot" Merry Edwards, one of the area's first women wine makers, at her vineyard. This leads to a lesson in Pinot Noir wine, including the history and some things about growing the delicate grapes. Lastly, an investigation into new vineyard growing and wine-making techniques, such as the use of biodynamics, and processes used to make sparkling wine.