Washing-up is one of those never-ending little jobs with a despairingly short-lived reward. Basically, we all want to get out of doing the washing-up. You can bet your life that as soon as you’ve washed the last cup, emptied the sink and wiped the surfaces, another dirty utensil will appear from nowhere keenly awaiting its turn in the soap studs. Of course there are obvious ways to win the washing-up war, after all, we are always looking to save time.…