I made a turkey soup a couple of days ago -- a long process but worth all the work. And now we have soup in the freezer that will be very comforting on some snowy winter nights. Include soup in your piece of writing. Perhaps your character could eat nothing but soup, or never eat soup, or drown in soup, or be poisoned by soup. Or spend their time trying to make a life list of as many different kinds of soup as they can, or they try to eat an alphabet of soup - first up is sure to be asparagus. Or they belong to a dinner club that meets at the members' houses whose meals must always feature soup. Or perhaps somebody makes a soup that has magical properties. Or someone spills soup and it makes a shape of Elvis on their kitchen floor.