How to Know If Your Expensive Wine Is Fake

May 21 -- Maureen Downey has become a top wine fraud investigator, helping to rid the wine industry of counterfeit and stolen wine. Downey met Bloomberg at Wingtip in San Francisco, where she showed us how to tell if that $200,000 bottle in your cellar is a fake. (Video by Jennafer Savino, Amy Marino) --Subscribe to Bloomberg on YouTube: Bloomberg Television offers extensive coverage and analysis of international business news and stories of global importance. It is availa