|IBA Official Cocktail|
|Primary alcohol by volume|
|Served||Well shaken, with ice|
|Standard drinkware||Hurricane glass|
|IBA specified ingredients*|
|Preparation||Pour all ingredients into cocktail shaker filled with ice cubes. Shake well. Strain into highball glass. Garnish with pineapple and cocktail cherry.|
|* Singapore Sling recipe at International Bartenders Association|
The Singapore Sling is a gin based cocktail. This long drink was developed sometime before 1915 by Ngiam Tong Boon, a Hainanese bartender working at the Long Bar in Raffles Hotel, Singapore. It was initially called the gin sling, - a sling was originally an American drink composed of spirit and water, sweetened and flavored.
D. A. Embury stated in the Fine Art of Mixing Drinks: "Of all the recipes published for [this drink] I have never seen any two that were alike." The Times described the "original recipe" as mixing two measures of gin with one of cherry brandy and one of orange, pineapple and lime juice  An alternative "original recipe" used gin, Cherry Heering, Bénédictine, and fresh pineapple juice, primarily from Sarawak pineapples which enhance the flavor and create a foamy top. The hotel's recipe was recreated based on the memories of former bartenders and written notes that they discovered regarding the original recipe.
By the 1980s, the Singapore Sling was often little more than gin, bottled sweet and sour, and grenadine. With the move towards fresh juices and the re-emergence of quality products like Cherry Heering, the cocktail has begun to resemble its original version. Recipes published in articles about Raffles Hotel before the 1970s are significantly different from current recipes, and Singapore Slings drunk elsewhere in Singapore differ from the recipe used at Raffles Hotel.
The gin sling, attested from 1790, described an American drink of gin which was flavoured, sweetened and served cold. The Singapore sling has been documented as early as 1930 as a recipe in the Savoy Cocktail Book; Ingredients ¼ lemon juice, ¼ Dry Gin, ½ Cherry Brandy: "Shake well and strain into medium size glass, and fill with soda water. Add 1 lump of ice".
- Campbell, Colin (12 December 1982). "Singapore Journal; Back to Somerset Maugham and Life's Seamy Side". The New York Times (Singapore).
- The Daily Telegraph, Peterborough: Sling shot AVA GARDNER'S knickers are still missing, 13 April 1991
- OED sling, n.5
- p. iv/4 (Singapore Suppl.), The Times 19 July 1976
- Burkhart, Jeff (10 April 2011). "Sometimes a bartender needs to sling whatever works". mercurynews.com. San Jose Mercury News. Retrieved 2011-04-14.
- OED, gin-sling, n.
- OED Singapore sling n.
- "The Genealogy and Mythology of the Singapore Sling," Ted "Dr. Cocktail" Haigh, in Mixologist: The Journal of the American Cocktail, 2007, ISBN 978-0-9760937-0-1
- Andrew F. Smith: The Oxford Companion to American Food and Drink. Oxford University Press 2007, ISBN 978-0-19-530796-2, p. 567 (online copy, p. 567, at Google Books)
- Rob Chirico: Field Guide to Cocktails: How to Identify and Prepare Virtually Every Mixed Drink at the Bar. Quirk Books 2005, ISBN 978-1-59474-063-3, p. 257 (online copy, p. 257, at Google Books)
- 100th Anniversary of the original Singapore Sling at Raffles Singapore
- SingaporeSling recipe at DrinkBoy
- Gordon's Gin Singapore Sling at thebar.com UK
- Jason Wilson (February 2011). "For a better Singapore Sling, the answer is clear (not red)". Washington Post.