In a large mixing bowl, combine 2 cups of well-chilled orange soda, 1 cup of heavy cream, 3/4 cup of granulated sugar, and 1 teaspoon of vanilla extract. Stir gently for 2-3 minutes until the sugar dissolves.

Add a few drops of orange food coloring to the mixture if desired and blend until evenly distributed.

Pour the combined mixture into your Ninja Creami pint container, ensuring not to exceed the max fill line and secure the lid.

Place the container in the freezer and let it freeze for at least 24 hours.

Remove the pint container from the freezer, insert it into the Ninja Creami machine, and select the 'Ice Cream' function. Process for about 2-3 minutes.

Scoop the ice cream into bowls or cones and top with whipped cream or sprinkles if desired.