April 17 & 18:
Greenfield Winery,
American Canyon, 10am - 4pm,
www.greenfieldwinery.com
April 23:
Flavors of the Vineyard,
Bunkers Grille, Brentwood, 6pm - 9pm
April 24:
Wines of Contra Costa,
Los Medanos College, Pittsburg, 1pm - 4pm