Chicken velouté soup with cheese croquette and truffle

By Michel Roux Jr. From Saturday Kitchen Ingredients 6 chicken wings 125ml/4fl oz dry white wine 1 thyme sprig 6 button mushrooms 1 litre/1¾ pints white chicken stock 4 tbsp crème fraîche 200ml/7fl oz double cream 250g/9oz cooked floury potatoes 2 free-range eggs 1 tbsp butter 100g/3½oz camembert, cut …