The Singapore Sling is a gin-based cocktail from Singapore. 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 a North American drink composed of spirit and water, sweetened and flavored.
The gin sling, attested from 1790, described an North 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”.