Naturally occurring antioxidants in fresh grapes known as polyphenols are believed to be responsible for this beneficial impact. The information contained in the AP News report may not be published, broadcast, rewritten or redistributed without the prior written authority of The Associated Press. If grapes are left in their bunch for fruit and cheese platters, rinse them briefly under cool water and drain to refresh them about 30 minutes before serving. Johanna Brandt tells us about her experience with grapes in her book The Grape Cure. AP file photo Last Wednesday marked the day when all Italian wine fans flock to Fort Mason for Gambero Rosso Tre Bicchieri Three Glasses tasting. Blend of chardonnay, Friuliano formerly called tocai Friuliano and sauvignon blanc, the grapes are picked over-ripe and are then dried before barrel fermentation. Another hurdle is the widespread consumer assumption that German wines are dehydrate grapes always sweet.