JoJo, I know this is a dissapointment...for me too, since I am used to eating a big bowl of ice cream every night!
However, Dr. A did say in the first book that it is better, if you are going to cheat (not that you were doing that!) to eat full fat ice cream...the real stuff, like Ben & Jerry's...and put some healthy stuff, like fruit or nuts, to help slow down the absorbtion of the sugar. He says the full fat in the this ice cream will slow down absorbtion of sugar and will satisfy you, so you do not eat more every day. I hope that helps!
That said, one person on this forum says she has a DQ sundae every Sunday and is continuing to lose! I could not do that, I believe, but it works for her.