Wash vegetables such as onion, potato, carrot, and broccoli thoroughly, and cut them into bite-sized pieces.
Add olive oil to a pot and sauté the onions to bring out their aroma.
Add potatoes and carrots, and stir-fry together.
Pour in water and let all the ingredients boil until they are submerged.
Add broccoli and tomatoes.
Season with salt, pepper, herbs, and more to taste.
Simmer over low heat until all the vegetables become tender.
Serve on a plate and garnish with parsley or other herbs.