A little taste off the vine! Here a mere $5 can get you a Black Rock logo glass, picnic corkscrew, tour and wine samples. Afterwards you can purchase a bottle - aged in French and American oak casks - of hearty red zinfandel, white refreshing sauvignon blanc, or Grenache made from grapes grown in Rancho Cucamonga. Prices range from $12.50 to $18.50, so join the cellar club and receive two select bottles every three months delivered to your door. Open Sat., 11 a.m.-5 p.m. Parking; reservations not required. AE, MC, V.