The Ninja Swirl by Creami can make both hard and soft serve ice cream, plus any number of other frozen treats.

Once it popped onto the scene in the 1940s, soft-serve ice cream would change the game for the fast food industry.

5. Can I make gelato in an ice cream maker? No. Gelato differs from ice cream in two important ways. It's made with milk instead of cream, and it contains much less air. Most ice cream makers whip ...