Begin by peeling the orange, making sure to remove any bitter white membranes, and then separate the orange into sections.

Place the orange sections in a food processor or blender.

Add the fresh cranberries, coarsely chopped apple, and chopped celery.

Pulse the ingredients in the food processor or blender until they are coarsely chopped, creating a chunky relish-like texture.

Transfer the mixture to a bowl and stir in the granulated sugar along with the orange zest.

Place the relish in an airtight container, cover it, and let it chill in the refrigerator for at least 1 day or for up to 1 week before serving.

Enjoy your homemade Apple-Cranberry Relish as a delightful accompaniment to various dishes!