Sweet potato, coconut & lemongrass soup with coriander sambal - Good Food Middle East

Ingredients

• 2 tbsp groundnut oil
• 4 spring onions, sliced
• 2 large garlic cloves, sliced
• 2 lemongrass stalks, outer leaves removed and stalk finely chopped
• finger-sized piece ginger, sliced
• 900g sweet potatoes, peeled and chopped into small pieces
• 215ml coconut milk
• 285ml vegetable stock (we used Bouillon)
• 1 green chilli, deseeded
• 1 tsp caster sugar
• 2 limes, juiced
• 1 small pack coriander