As raw bars replace sushi bars, and New Yorkers become more familiar (and comfortable) with the cornucopia of oysters from the Eastern Seaboard alone, the idea of eating raw oysters at home sounds less daring. Why spend all that money, when you could be tipping back bivalves in your own apartment? We got a shucking lesson from a pro: Laurence Edelman of Mermaid Oyster Bar. Watch the video, and then try it at home. Carefully.