I got this recipe from "The Australian Women's Weekly 501 Low-Fat Recipes" book. This ice-cream is really great because not only does it have a great taste, but it is also low in fat. Carob is kind of an acquired taste, but those who do enjoy it, usually can't get enough. Carob is also used as an alternative to chocolate for diabetics. NOTE: For the cup of banana, use 3 medium sized overripe bananas. The prep time does not include freezing time.