Place a medium saucepan over medium heat.
Add all ingredients into the saucepan.
Bring sauce to a simmer and once simmering, cook for 10 to 20 minutes or until the sauce thickens.
When the sauce seems syrup-like, remove the pan from the heat. Carefully remove the pieces of orange peel and discard them. If you still have a lot of cranberries that look whole and you want a smoother cranberry sauce, you can use a potato masher or fork to smash and smooth the sauce a bit.
Serve warm or store in a jar or lidded container in the refrigerator for up to 2 weeks.
Notes:
Cranberry sauce also freezes well. This makes a lot of sauce, so if you don't think you will end up using it all, you can add it to freezer bag and store for up to 6 months.