Adjust salt, pepper, dashida, chili powder, etc. to taste.
Chop onion, carrot, celery, tomato, and cabbage into bite-sized pieces.
Heat olive oil in a pot and sauté onion, carrot, and celery.
Add cabbage and tomato, and sauté together.
When the vegetables soften, add water and bring to a boil.
Season with salt and pepper.
Simmer over medium heat until all ingredients are cooked.