Place the cranberries into a medium-sized saucepan and add the sugar. If you want a sweeter cranberry sauce, add more sugar. Sugar replacement such as Swerve will also work well for this recipe. Use a zester to zest the orange and add about 1 tablespoon zest to the sauce. Slice the orange open and squeeze to juice into a measuring cup. Add 1/3 cup orange juice to start.

Cook the cranberry sauce over medium heat. Once the sauce starts to simmer, continue to cook for 15 to 20 minutes, until the berries burst open, soften and the sauce thickens. As the sauce cooks, add more orange juice or water if it's too thick. Stir occasionally with a rubber spatula. Once the sauce is done cooking, use the spatula to press the cranberries until a chunky sauce forms. Transfer into a serving dish and garnish with orange rind.