First discard the tough outer leaves of the cabbage, cut it into quarters and remove the hard stalk. Then shred the rest of the cabbage finely, using your sharpest knife (although you can shred it in a food processor, I prefer to do it by hand: it doesn’t come out so uniform).
Next, in a fairly large casserole, arrange a layer of shredded cabbage seasoned with salt and pepper, then a layer of chopped onions and apples with a sprinkling of garlic, spices and sugar. Continue with these alternate layers until everything is in. Now pour in the wine vinegar, a little water lastly add dots of butter on the top.
Check after 1 hour, give it a stir and if it is getting dry add a little water.
Put a tight lid on the casserole and let it cook very slowly in the oven for 2-2½ hours, stirring everything around once or twice during the cooking.
Red cabbage, once cooked, will keep warm without coming to any harm, and it will also re-heat very successfully. And, yes, it does freeze well so, all in all, it’s a real winner of a recipe.