Jemma O'Hanlon's Foodwatch - Easy kumera soup

Ingredients

• 1 kg kumera (orange sweet potato)
• 1 onion
• 2 cloves garlic, crushed
• 2 tablespoons olive oil
• 4 cups water
• 425 g can reduced-salt tomato soup
• TO SERVE:
• Thick slice of rye or grainy bread (salt-free - if this is your diet)
• Chopped fresh parsley or coriander (cilantro)