This milkshake is $100 at a New York restaurant known as Serendipity 3, and it just set a Guinness World Record for being the most expensive milkshake!
According to UPI:
The milkshake contains Jersey milk sources from Channel Islands cows, Tahitian vanilla ice cream, Devonshire luxury clotted cream, Madagascar vanilla beans, 23 karat edible gold, donkey caramel sauce featuring donkey's milk and Venezuelan cocoa, Luxardo Gourmet Maraschino Cherries and whipped cream.
Serendipity 3 also holds Guinness records for most expensive sandwich and most expensive dessert.