Sweet and sour cabbage comes from Germany and is a perfect accompaniment to grilled foods in late summer. I make a large batch on a cool morning, then serve it as a side dish straight out of the refrigerator all week. It's also wonderful served warm with grilled entrees.
3 tablespoons olive oil
½ cup thinly sliced yellow onion
5 c. sliced red cabbage
3 large tomatoes, coarsely chopped
2 tbsp. red wine vinegar
2 tsp. salt
1 tbsp. honey or sugar, or to taste