Vikki wanted to know what sugar alcohol was used in these, so here is the ingredients list for PhillySwirl sugar free ice cream. It looks like the sugar alcohol used is erythritol. It also contains ace-K sweetener ... I'm not entirely sure what that is, but since Wikipedia says it is as sweet as aspartame, I'm assuming it is NOT aspartame. Grrr, I hate aspartame.
Main Ingredients: Water, Sorbitol, erythritol, polydextrose, glycerine, Natural and Artificial Flavorings, *Strawberry Concentrate, *Lemon Concentrate, *Orange Concentrate, pectin, xanthan gum, guar gum, ascorbic acid, sucrulose, acesulfame-K (sweeteners), Red # 40, Yellow # 5 and 6, Blue # 1.
*Contains trivial amounts of sugar