In a medium size soup pot over medium heat, heat coconut oil. Add onions and carrots and sauté for 5 minutes

Add garlic and coriander and cook until just fragrant, about 30 seconds

Add stock and sweet potato. Cover and cook over medium heat for 10 minutes or until vegetables are soft. Add cilantro, lemon juice and remove the soup from the heat

Puree soup in batches in a blender or food processor until smooth. Return back to the pot and re-heat just before serving