Well, I gave it the good old college try. I suppose it's important to know that, when you're trying to make sherbet that isn't the consistency of shaved ice and you don't own an ice cream maker, you should allow yourself a good many hours.
Jacqueline's Dairy-free Orange Sherbet
1 cup sugar
1 cup water
1 1/2 teaspoons orange zest
2 cups orange juice
1 cup plain rice milk
1/4 teaspoon xanthan gum
Combine sugar, orange zest and water in a sauce pan and bring to a boil. Allow to boil for 1 minute, without stirring, creating a simple syrup. In a medium sized metal bowl, whisk together orange juice, rice milk and xanthan gum. Add the simple syrup to this mixture and whisk well then place in the freezer. Remove from the freezer every half hour to one hour, whisk well and then return to freezer. Do this until you can no longer whisk the mixture then allow to freeze. Remove from freezer 2o minutes before serving.
I'm sure that this could also be done in an ice cream maker but, since I don't have one, this is how I did it. :) If you have an ice cream maker and try it out, please let me know how it goes!