Nothing harbors more potential than the lone sausage. Occasionally, you may have one left over from the previous night’s sausage and mashed potatoes, or from a weekend breakfast’s sausage sandwich, and your very understandable impulse is to just dunk it in some mustard and be done with it. Well, you could do that (and there is no denying that sometimes it is the only thing to do), but you could also make one of these simple recipes and really make the most of it.