Roasted Sweet Potato and Coconut Soup

Roasted Sweet Potato and Coconut Soup Ingredients 4 medium sweet potatoes (About 1.5 kg) 2 tablespoons extra virgin olive oil Sea salt flakes 400 ml can coconut milk, plus extra to serve 3½ cups (875 ml) chicken stock 1 stalk lemongrass, halved and bruised 5 cm piece [...]