I do like a tin of food. There's something very humble about tinned fruit and vegetables particularly; and I am not one to overlook anything that comes in a can. My favourite canned good of all is the artichoke. That's how this recipe for Chicken, Olive and Artichoke Stew with Risotto came about. Artichokes are very expensive, covered in oil (normally sunflower rather than nice olive oil) and quite small if you buy them chilled or in a jar; but in