Using your electric mixture, combine powdered sugar and butter until light and fluffy.
Add the liquor of your choice and grated orange peel. Stir until well combined.
Cover and refrigerate until ready to serve. Can be made 4 days ahead.
Bring to room temperature before serving.
* Traditional Hard Sauces use brandy.
Orange Hard Sauce Recipe: https://whatscookingamerica.net/Sauces_Condiments/OrangeHardSauce.htm