Preheat the
oven to slow 150C (300F / Gas 2). Quarter the cabbage and remove the
core. Finely slice the cabbage and put it in a large casserole dish with
the onion and apple. Toss well. Combine the garlic, spices, sugar and
vinegar in a small bowl. Pour the mixture over the cabbage, and toss to
combine. Dot the top with the butter. Cover and bake for 90 minutes,
stirring once or twice. Season to taste with salt and freshly ground
black pepper, and serve hot.