Vietnamese Grilled Prawns with Chilli, Sour Mint and Palm Sugar Preparation time: 20 minutes Cooking time: 10 minutes Serves: 4-6 20 XL King prawns 2 long red chillies, seeded 5cm piece ginger, grated 4 cloves garlic, minced 2 Tbsp light palm sugarfinely-grated zest and juice of 2 limes1 Tbsp fish sauce 4 sprigs Vietnamese sour…