Chop cabbage, onion, carrot, celery, and tomato into bite-sized pieces.
Add olive oil to a pot and sauté onion and celery.
Add cabbage and carrot, and continue sautéing.
Add tomato and pour in water.
Season with bay leaves, salt, and pepper.
Once it boils, reduce to low heat and simmer for 20 minutes.
Finish with parsley or herbs, if desired.