In a small pan, add palm sugar, water, and pandan leaf. Heat on low heat while stirring constantly. Cook until the sugar is dissolved and the mixture boils. Set aside and cool completely before using.
Pandan Dough
Make pandan juice – Use a pair of scissors to cut pandan leaves into 1-2 inch pieces into a blender or food processor. Add water and blend until the leaves are fully pulverized. Use a strainer or cheesecloth to strain the pandan juice.
Make batter – In a medium pan, sift in rice flour and tapioca starch. Add granulated sugar and salt, and pandan juice. Mix until smooth with no lump with a spatula. Add coconut milk and stir to combine.
Cook – Heat on low heat and stir constantly. Cook until the mixture thickens. Set aside and cool completely before using.
Coconut Milk Dough
Make batter – In a medium pan, sift in rice flour and tapioca starch. Add salt and granulated sugar. Pour a little bit of coconut milk and mix with a spatula until smooth with no lump. Then, add the remaining coconut milk and stir to combine.
Cook – Heat on low heat and stir constantly. Cook until the mixture thickens. Set aside and cool completely before using.
Assemble
Prepare banana leaves – Cut banana leaves into 24 10-inch/25 cm squares or more for spares. Wipe with a wet kitchen towel to clean them. Soften banana leaves by passing them lightly over the low flame of a gas burner so that they become pliable and do not break easily during folding.
Wrap – On the working surface, put 2 banana leaves with pale sides touching each other. Spread 2 tablespoons of pandan dough and coconut milk dough. Sprinkle the sliced coconut meat on top.
Fold one side up. Rotate and put the fold side on your palm. Pour a small ladle of palm sugar syrup on top. Fold the other side up. Pull in the long ends. Secure the top with a toothpick.
Steam in a steamer for 10 minutes to infuse the aroma of banana leaves.
Cool completely and chill in the refrigerator for at least 3 hours before serving.
Notes
Storage.Kue Jongkong will last for up to 3 days in the refrigerator.Wrapping with banana leaves is completely optional, but the aroma and flavor will be better this way. You can also pour the components into individual cups if desired.Make ahead. The longer it sits, the better the texture and flavors. It is recommended to make the dessert a day before serving.