Purple Sprouting Broccoli and Leek Soup

|The broccoli really gives depth and earthiness to this creamy soup.|potatoes leek purple sprouting broccoli|50g butter2 potatoes peeled and diced3 leeks washed and finely sliced845ml vegetable stock200g purple sprouting broccoli washed and trimmed200ml milk|Melt half the butter in a large saucepan add the potatoes and 2 of the leeks. Cover and cook for 10 minutes without browning.Add the stock bring to the boil cover and simmer for 15 minutes.Add the broccoli and cook for a further 8-10 minutes.Remove from the heat and blend until smooth.Add the milk season to taste then reheat gently.Meanwhile melt the remaining butter in a frying pan and fry the remaining leek until lightly caramelised.Serve the soup with the fried leek sprinkled on top.|5.00 minutes|4|