Cut cabbage, onion, bell pepper, tomato, and carrot into bite-sized pieces.
Heat olive oil in a pot and sauté the onions and carrots.
Add all the other vegetables and stir-fry for another 2–3 minutes.
Pour in 500ml of water and add tomato sauce, then bring to a boil.
Season with salt and pepper, and simmer over low heat for 20 minutes.