4 Apples cored, peeled and sliced into thin wedges
6 tablespoons butter
6 tablespoons dark Muscovado sugar
2 tablespoons demerra sugar
2 tablespoons cornstarch
1/2 cup apple cider
2 tablespoons ground cinnamon
1/2 teaspoon freshly ground nutmeg
1 tablespoon yuzu juice or lemon juice