Thapthim Kpop is a traditional and well-known dessert in the Thai cuisine. It got its name from the red vibrant looking chestnut that resembles ruby.
This recipe is not hard to tackle if you follow the steps closely. The most challenging part of the recipe is to coat the red chestnut in tapioca starch evenly and get it to cook it well so you get the jelly and chewy exterior of the "ruby".
After leaving the chopped chestnut in the food dye water to absorb the red coloring, you need to drain it before coating them in the tapioca flour and there is no substitute for tapioca starch unfortunately. The chestnut needs to be wet in order to absorb the tapioca starch too. So after draining it, you should immediately place them in the tapioca flour for coating. If you prefer the chestnuts to have a more chewy texture, you can double coat them in tapioca starch.
When cooking them, remember that the water has to be boiling hot else the tapioca coating will fall off the chestnut if the water is not hot enough and it will result in lumpy and gluey "ruby".
Accompanied by a sweet coconut milk pandan scented sauce. This dish can be prepared earlier and assembled when required. You may even add in durian and jackfruits to go along!