Cut the onion, carrot, celery, and cabbage into bite-sized pieces.
Heat olive oil in a pot and sauté the onion and garlic.
Add the carrot, celery, and cabbage and stir-fry for 2-3 minutes.
Add the crushed tomatoes, water, herbs (such as basil, rosemary), salt, and black pepper.
Once it comes to a boil, reduce to medium-low heat and simmer for 20-30 minutes.
Right before serving, finish with parsley or a squeeze of lemon juice.