Secret New York - Hidden Bars & Restaurants:A supperclub on a helipad, a dinner in a dumpster, a hidden heavy metal bar in Brooklyn, a dim sum restaurant that turns into a nightclub, New Yorks "most legitimate speakeasy", a club "not open since 2009", a Swiss ski chalet accessed through a kitchen, a referral only Japanese restaurant, a grungy underground sake bar, an opento the public dining room in the United Nations, gourmet donuts inside a car wash, restaurants inside freight entrances A