Clean, wash and cut the pointed cabbage into 6 slices. Wash, clean and quarter the tomatoes and remove the seeds. Cut the fruit flesh into small pieces. Peel and finely chop the onion.
Drain the chickpeas. Roast the mustard seeds in a small pan, remove. Mix mustard, mustard seeds, vinegar and 4 tablespoons of water. Season with salt, pepper and sugar. Add 3 tablespoons of oil.
Wash the thyme, shake dry and pluck the leaves. Fold into the marinade. Fold chickpeas, tomatoes and onion into the marinade. Heat 2 tablespoons of oil in a pan. Fry half of the cabbage slices for about 5 minutes while turning.
Fry the rest of the cabbage as well. Arrange the cabbage with the marinade on plates. Baguette bread tastes good with it.