BBC Food - Recipes - Mulligatawny soup

Ingredients

• 25g/1oz butter
• 1 tbsp sunflower oil
• 1 large onion , finely chopped
• 2 garlic cloves , chopped
• 2 medium carrots , cut into 1.5cm/ ⅝in cubes
• 2 celery sticks, thinly sliced
• 1 medium sweet potato , peeled, cut into 1.5cm/⅝in cubes
• 1 eating apple , peeled, quartered, cut into 1.5cm/⅝in cubes
• 1 tbsp medium curry powder
• 1 vegetable or chicken stock cube (low-salt is best)
• 1litre/1¾ pints boiling water
• 1 tbsp tomato purée
• 1 tbsp mango chutney
• 100g/3½oz basmati rice
• 100g/3½oz natural yoghurt or soured cream , to serve
• fresh coriander or flat-leaf parsley, to garnish (optional)
• salt and freshly ground black pepper