Jemma O'Hanlon's Foodwatch - Non-starchy vegetable soup

Ingredients

• 1 tablespoon oil
• 1 leek, sliced (white part only) or use 1 medium onion
• 2 cloves garlic
• 1 carrot sliced
• 2 sticks celery sliced
• 1 zucchini (courgette), sliced
• 1/4 cabbage, shredded
• 440 g can diced tomato
• 1 litre vegetable or chicken stock (ideally make your own)
• 2 cups water
• 2 tablespoons chopped parsley