Sweet Potato and Coconut Cream Soup

Ingredients

• Salt and freshly ground black pepper, to taste
• 600ml coconut cream
• 600ml vegetable stock
• 1 tbsp groundnut oil
• 1 onion peeled and finely chopped
• 1 clove garlic crushed
• 2cm piece ginger peeled and grated
• 675g sweet potatoes peeled and diced
• 1 tbsp lemongrass chopped
• 2 limes zest and juice