Pour the watermelon, allulose, lime juice, and salt, into a small blender and blend until all ingredients are fully combined. Pour the mixture into a Ninja Creami container.
Freeze on a level surface for 24 hours. Your freezer should be between 9 and -7 degrees Fahrenheit.
Process the Ice Cream
After 24 hours, remove the Ninja Creami container from the freezer. If there is a large bump in the sorbet, melt or scrape the large bump so that the top is level.
Place the Ninja Creami container into the outer bowl of the Ninja Creami and then process on "SORBET."
If the sorbet is dry or crumbly looking (like sand), respin. You should not need to add any additional liquid during the respin. You may have to repeat this process a couple of times.
Video
Notes
Does the sorbet really need to be frozen for 24 hours before processing?According to the manufacturer, 24 hours of freezing time is recommended.Many have been successful with a shorter freeze time but that will vary based on the ingredients in the recipe and the temperature of your freezer.It’s always recommended to freeze for the full 24 hours and then adjust moving forward after you know how the recipes react with your ingredients and freezer.Just because it looks frozen does not mean that it is frozen solid in the middle or bottom of the container.Can I freeze the leftovers and reprocess?Yes, since this recipe does not have any mix-ins, you can freeze the leftovers and then process it again using the original function; sorbet.If the ice cream has mix-ins, those mix-ins will get completely combined with the ice cream base if processed again after freezing the leftovers.if you added mix-ins, let the leftovers thaw on the counter until it’s scoopable again, instead of reprocessing.