It is only four servings if you plan on sharing the icecream by dishing it out into bowls. If you plan on eating directly out of the carton, thus saving energy (water, electricity, gas - whatever you may have) and not polluting the environment (dishsoap down the drain) it is considered only one serving.

__________________
A blessed thing it is for any man or woman to have a friend, one human soul whom we can trust utterly, who knows the best and worst of us, and who loves us in spite of all our faults.