In a bowl, place Shiratamako and pour water over it. Use your hand or spatula to mix. Once it starts to form a dough, use your hand to knead until smooth. Make sure that no chunks of Shiratamako are left.
If the dough looks too dry, add more water, adding one teaspoon at a time. If the dough looks too floppy, add a sprinkle of more Shiratamako until it is smooth and firm. Knead well until a cohesive dough is achieved.
To check the consistency of the dough, break it in half. If it breaks easily with a flat, rough cut surface, the dough has reached the perfect hydration. Another classic way to check the consistency is when the dough is soft like your earlobe, it's ready!
Roll the dough into a log and cut into 12 pieces.
Use your hands to roll each piece into balls.
Use your finger or a teaspoon to create an indent in the middle. This helps ensure even cooking.
Bring a pot full of water to a boil. Add Shiratama Dango and stir to remove them from sticking to the bottom of the pot. Cook until all of them float to the surface, about 3 minutes. Then, cook for another 1 minute.
Use a slotted spoon to transfer the Dango into ice water. Let cool. Drain well and transfer into serving bowls. Add toppings of your choice and enjoy!