Frizzone (Italian vegetable stew)

For ➍-➏
3 tbs olive oil
1 large onion, peeled & chopped
2 celery stalks, chopped
1 large eggplant, chopped
2 medium zucchini, chopped
2 medium carrots, trimmed & chopped
2 garlic cloves, peeled & minced
1 500 g can cherry tomatoes
2 tbs tomato paste
1 ts dried oregano
20 cl water
3 tbs fresh basil, chopped
½ cup fresh parsley, chopped
½ cup olives, chopped
¼ cup salted capers, rinsed
salt & pepper
2-3 ts aged balsamico vinegar

Heat the olive oil over medium heat in a large, wide bottom saucepan.
Add the onion, celery, eggplant, zucchini, carrots, and garlic. Cook, stirring often until the vegetables begin to soften, about 8 to 10 m.
Add the tomatoes, tomato paste, oregano, water, basil, and half the parsley, and cook until the stew has thickened, about 20 m.
Stir in the remaining parsley, olives, and capers.
Taste, and season with salt and pepper.
Stir in the balsamico vinegar.

Serve warm, or allow to cool to room temperature.