Watercress Vichyssoise With Chilli Prawns | Allyson Gofton

Ingredients

• 200 grams watercress
• 2 tblsp oil
• 4 spring onions, trimmed and sliced
• 2 tsp minced ginger
• 1 stalk fresh lemon grass, bruised
• 300 grams potatoes, peeled and diced
• 400 ml can coconut cream
• 2½ cups good vegetable stock
• ½ cup natural unsweetened yogurt
• 1 large red chilli, deseeded and finely chopped
• 300 grams raw large peeled prawns
• 25 grams butter