Mmm, pie. This family-friendly dish of beef braised in veal stock and crushed tomatoes, with a healthy serving of roast vegetables tucked under its golden, butter-puff pastry lid, is the kind of food we all want to return to on a brisk winter’s evening, rubbing our hands as the aroma of baking pastry fills the house. Buttered mash on the side is probably compulsory but a hunk of crusty bread wouldn’t be out of place.