How is the Ninja CREAMi different from a traditional ice cream maker?

The Ninja CREAMi doesn't churn a liquid base; instead you freeze a pint solid, then the machine shaves and re-textures it into ice cream, sorbet, or soft serve. Buyer reviews note it excels at single-serve portions and protein/low-sugar recipes but works on a freeze-first workflow rather than the traditional pour-and-churn method.