Cut vegetables such as onion, carrot, celery, and cabbage into bite-sized pieces.
Heat olive oil in a pot, then sauté the onion, carrot, and celery.
Add cabbage and tomato, and stir-fry for a little longer.
Pour in water and tomato sauce, and bring to a boil.
Season with salt, pepper, and herbs as desired.
Simmer until the ingredients are sufficiently soft.