Bring some water to a boil.
In a small bowl, add the tapioca starch, butterfly pea powder, and hot boiled water. Carefully stir the mixture together with a spatula at first, and then use your hands to knead into a dough. If it's a bit dry, add a tiny bit of water (just a little will do) and keep kneading until it reaches the texture of playdough.
Working in 2 batches, pinch off a tiny piece of dough and shape it into a small ball (roughly the size of a green pea). Lay the tapioca balls onto parchment paper so it doesn't stick. Repeat with the remainder of the dough.
Bring a small saucepot filled with water to a boil and add in the tapioca balls. Cook over medium heat for 6-7 minutes. Remove with a slotted spoon and place the pearls into the butterfly pea tea prepared earlier.