100
Cost (in U.S. dollars) of New York’s Upper East Side restaurant Serendipity 3’s LUXE Milkshake. Released on June 20 (National Vanilla Milkshake Day), it has been awarded the Guinness World Record for Most Expensive Milkshake. A key ingredient includes 23-karat edible gold. The concoction requires a 24-hour notice before you can sip and savor it in the NYC summer heat.