Boudin noir aux deux pommes

French black pudding is made from ham, pork offal, blood, fat and flavoured spices, usually cloves and pepper. Most recipes will tell you to cook the boudin separately from the apples, and often you will see it neatly served with the apple and potato purées on the side. But my children love this messy, unattractive way of presenting and eating the whole lot thrown in the pan together. Serve it with French mustard.