Swede purée

Put the swede in a pan and cover with boiling water. Add 1 tbsp salt and bring to the boil. Cook for about 15-20 mins until tender. Once softened, drain the swede, then blitz it with the butter and natural yogurt in a food processor and check for seasoning. Divide the purée between plates and top with the warm ragu. Sprinkle over chopped parsley and serve.