In a medium bowl add rice flour. Gradually add the water and mix until a dough is formed. Take about 1/2 tablespoon of the dough and shape it into a ball. Once half of the dough is formed into white balls, you can add a small amount of ube flavor on the remaining dough and mix again. If the dough becomes sticky, you can add about 1/2 tbsp of flour to make a dough. Again, take about 1/2 tablespoon of the dough and shape it into a ball. Place all formed rice balls on a large tray. Set aside.
In a large pot, combine water and 1 can of coconut milk. Stir occasionally until it boils. Drop in the dough (rice balls).
When the dough starts to float, add the sweet potatoes and cook until half-cooked. Add saba (plantain) bananas and continue cooking for about one minute.
Add 1 can coconut milk, jackfruit syrup, sugar, cooked tapioca pearls (sago) and sugar. Stir to combine. Add tapioca pearls and sweetened langka. Cook for another 3-5 minutes or until the sauce is slightly thick.
Serve warm or cold. Enjoy!