According to Official Guinness Records,
The most expensive milkshake is the LUXE Milkshake which is sold for $100 (£75.05;€85.60) at Serendipity 3 and made in partnership with Swarovski® and the Crystal Ninja in New York, New York, USA, as of 1 June 2018. The first ceremonious purchase of the milkshake was done by social media influencer Benjamin Liong Setiawan. It was served in a milkshake glass coated in 3,000 crystals provided by Swarovski® and designed by Crystal Ninja. The luxurious milkshake is made from the followingJersey milk – made from cows originally bred in the Channel Islands, which are popular for the high butterfat contentTahitian vanilla ice cream – sourced from premium slow-grown, sun-cured vanilla beansDevonshire luxury clotted cream – produced in Devon, England, this thick and rich cream is made from heating fine milk until a thick layer of golden cream forms on the surfaceMadagascar vanilla beans – as the most labour intensive to grow, the Madagascar vanilla plants, Vanilla Planifolia, take up to three years to produce beans that are intense in flavour23 karat edible gold – this pure and edible gold creates a glimmering, golden sparkle when mixed with the other ingredientsWhipped cream – a grass-fed cream, infused with a simple syrup of sugar and vanillaLe Cremose Baldizzone (donkey caramel sauce) – this rare sauce that is sweet and unique in flavour is made from Venezuelan cocoa, Piedmont hazelnuts, fresh donkey’s milk, and cane sugarLuxardo Gourmet Maraschino Cherries – produced in Luxardo, Italy, these cherries are dense and chewy with a sweet-tart flavour made with prized sour Marasca cherries and preserved in the fruit’s famed liquor.
For a complete list of 2018 records, please visit 2018 Guinness Records in United States.