Place the apple, maple syrup and cinnamon in a large saucepan. Cover with a tight-fitting lid and cook, stirring occasionally, for 20–25 minutes or until the apple is soft. Discard the cinnamon stick, add salt and pepper to the apple and crush with a wooden spoon. Spoon into sterilised jars or clean containers and store in the refrigerator. Serve with roasted pork.