Methods: 1. Rinse the longan and pandan leaves thoroughly. Add clean water to a pot and place the longan and pandan leaves inside. 2. Use the Hi-Light stove, set the heat level to 7, and bring to a boil. 3. After boiling, reduce the heat to level 2 and set the timer for 1 hour to simmer. 4. About 15 minutes before the end of cooking time, add the coconut sugar. Adjust sweetness according to personal preference. 5. Cool down and serve in a glass with ice cubes.