lol.  yes, ball drinks...
aNyHoO... the tea isn't too difficult, it's getting the TAPIOCA to get a good good texture and flavor.  Everytime we try to boil them, they pretty much melt 
 
Thanks for that website link too Yzzim.  It's pretty alright description, a better website than the ones i was able to find on ask.com.  but, yeah, the tapioca is the difficult part in my experience.