Classic German braised red cabbage slow-cooked with tart apples, red wine vinegar, cloves, bay leaf, and redcurrant jelly until meltingly tender and sweet-tart.
Toss finely shredded red cabbage with red wine vinegar and 1 tsp salt in a bowl. Let stand for 15 minutes to preserve its bright ruby-red color.
Melt butter in a Dutch oven over medium heat. Sauté diced onion and apples for 5 minutes until soft.
Add cabbage, red wine, redcurrant jelly, bay leaf, cloves, and cinnamon. Bring to a boil, then cover and simmer on low heat for 1 hour, stirring occasionally, until meltingly soft and glossy.
Remove whole spices. Season to taste with a pinch of sugar, salt, and pepper. Even more delicious reheated the next day.