By Fran Warde
An unusual combination, you may think, but the acidity of the rhubarb cuts through the richness of the pork and makes this a beautiful dish.
Preheat the oven to 190°C/375°F/Gas 5. Heat the oil and butter in an ovenproof pan and, when foaming, add the pork and brown on all sides. Place in the oven and roast for 25 m