For a richer flavor, consider using brown sugar instead of granulated sugar on the stone fruit. If you prefer a firmer soft serve, chill the blended mixture in the freezer for 1 hour before serving. Experiment with other stone fruits like peaches or apricots. You can also add a dash of vanilla extract to the soft serve for extra flavor. Adjust the amount of cinnamon and cardamom to your liking. A pinch of nutmeg would also be a welcome addition to the soft serve.