Mix the wheat starch and water thoroughly in a bowl.
Boil the coconut milk on low heat.
Add the wheat starch mixture to the coconut milk. Keep stirring until you get a dough.
Transfer the dough onto a mixer.
Add in the sugar, glutinuous flour, water and oil and mix into a dough.
Divide the dought into 4 portions, about 215g to 220g each.
Add a portion of to the pandan essence and half the white sweet potatoes.
Add a portion of to the half the white sweet potatoes.
Add a portion of to the purple sweet potatoes.
Add a portion of to the beet root.