It is a staple food throughout the winter here in Germany. Traditionally it is supposed to taste better the more often it is warmed up.
When I was au pairing with a German family, I was taught to cook the whole head of cabbage (took about 45 minutes), then chop it and re-heat it with onions and apples cut into fine strips, a shot of vinegar, a pinch of sugar, and absolutely no added water.
I have never cooked it this way myself since, but cut it into fine shreds whilst still raw, and cooked it with the apples, onions, sugar and vinegar, adding salt as well, but, again, no water at all. Cook for ages over a very very low heat.
Last Christmas I was given a pomegranate balsamic vinegar which I used. I have also tried a recipe using port wine.
With game, goose, or a roast dark meat it is a very traditional winter meal. Usually complemented with stodgy dumplings and a thick dark gravy.