Okay, I will try rinsing them multiple times next time. He does make sense. But I will still continue to boil it, instead of keeping it in water for 10 minutes, because I always use them right away. Also, sometimes I get larger balls, and if I do not boil them long enough, the middle part of the balls stay tight and raw.

Also, if you can find, you could try the balls made of other lentils (dal).