Step 1

Heat oil in a large saucepan over medium heat. Cook the onion for 5 minutes or until soft. Stir in curry paste for 1-2 minutes or until aromatic.

Step 2

Add the carrot, sweet potato and stock. Bring to the boil. Reduce heat to low. Simmer for 25-30 minutes or until tender. Cool slightly.

Step 3

Blend the soup until smooth. Heat over low heat for 2-3 minutes. Stir in the lime juice and brown sugar. Season.

Step 4

Combine the sour cream, chilli and coriander in a bowl. Serve with the soup.