In a large pot, combine coconut juice, water, and sugar. Bring to a boil and stir until sugar dissolves.
To create the dumplings, combine young coconut and tapioca starch in a medium mixing bowl. Mix thoroughly until desired consistency is met.
Scoop about half a teaspoonful of the batter and drop it into the boiling liquid mixture. When the dumplings are done, they should float to the top of the pot. If the dumplings fall apart during cooking, you may need to add a couple more tablespoons of tapioca starch to your dumpling mixture.
Once all dumplings have floated to the top, combine water and tapioca starch in a small bowl and stir it into the pot to thicken the liquid. Cook for about 5 more minutes until liquid thickens and dumplings become more translucent, stirring occasionally.