The singapore Sling was invented at the famous Raffles Hotel by Ngiam Tong Boon. This recipe is my favourite mix, which I got from the Savoy Recipe Book, printed in the 1930's. The are many other recipes for Singapore Sling, which many can be found on the web.
Prep: 45 minutes plus 6-12 hours marinating
Cook: Cooking Time 1 1/2-2 hours
Prep: 15 minutes
Cook: 10 minute
Prep: 10 minutes
Cook: 15 minutes