Brunkål (braised brown cabbage)

Instructions

1. Remove any damaged outer leaves from the cabbage, cut it into quarters, remove the core and slice it into thin strips.
2. Finely slice the onion.
3. Melt the butter in a large heavy pot over medium heat, then sauté the onion for 5 minutes without browning it.
4. Add the sugar and let it caramelize lightly, stirring for 2 minutes.
5. Add the cabbage, vinegar, water, salt and pepper, and mix well.
6. Cover and braise over low heat for 45 minutes, stirring from time to time, until the cabbage is tender and brown.
7. Adjust the seasoning and serve warm as a side dish.