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: 20 minutes plus 12 hours for soaking the dried beans
Cook: 1 hour and 30 minutes to 2 hours
Prep: Preparation Time 15-25 minutes
Cook: 20-25 minutes
Prep: 1 minute