Rinse the pandan leaves to remove the dirt and cut off the root ends. Cut the leaves into strips. Some places have pandan in small strips, so you don't have to do this
Add pandan leaves and coconut water to a blender and process until the leaves are completely pulverized
Strain the extract with a strainer or cheesecloth, then pour it into a pot along with sugar
Heat on medium till the sugar has all dissolved. Allow the syrup to cool, then store it in the fridge in an airtight container