BBC Food - Recipes - Cream roasted swede soup

Ingredients

• 1 swede , peeled and cut into cubes
• 3 tbsp olive oil
• salt and freshly ground black pepper
• 1 onion , finely chopped
• 2 carrots , finely sliced
• 2 stalks celery , finely sliced
• 1 clove garlic , crushed
• 6 stalks fresh thyme , leaves only
• 1.25 litres/2 pints vegetable stock
• 142ml/5fl oz carton single cream
• fresh thyme leaves to garnish