Bring 1 liter of water to a rolling boil in a pot.
Add the tapioca pearls to the boiling water.
Cook for 10 minutes uncovered, stirring occasionally to prevent sticking.
Remove the pot from the heat while the pearls still have a small white center.
Cover with a lid and let the pearls rest for 15 minutes.
Rinse the pearls under cold running water and drain well.