- Prepare all the ingredients as required in the recipe.
- Combine the water, barley, candied watermelon and pandan leaves into a large pot. Bring the mixture to a boil over high heat. When the mixture starts boiling, lower the heat and let it simmer for 30 mins until the barley expands and softens. Add water as needed.
- 6-8 mins before removing the pot from heat, add the rock sugar. Ensure the rock sugar is fully dissolved. Taste and add the rock sugar as needed. Remove the pandan leaves.
- Ladle out the portions into the glasses, making sure that each glass has some barley grain in it. If you prefer to drink it chilled, place it in the fridge.