Sweet potato soup recipe, nice and naked and healthy!

Ingredients

• onion, finely chopped
• 2 cloves garlic, crushed
• 3 cm fresh ginger root, finely chopped
• 1 stalk lemongrass, finely chopped
• 1 red chilli, cut into thin rings, some extra for garnish
• 3 limes, 1 squeezed, 2 cut into wedges
• 1 teaspoon Cocos-olive-palm
• 500 g sweet potatoes (approx. 2 large ones), peeled and cut into large cubes
• 500 ml coconut milk
• 500 to 1000 ml water