Soup. My other favourite of the day! When it cools pour into a pot and reboil every day for three minutes rolling boil. No need to refrigerate soup if you do that!  Chef advice and never fails!! Your - and my mammy - and me -  used to do this every week. I am aware that other chefs - particularly my son-in-law - would say - quite rightly also that you actually do need to refrigerate your soup: boiling it hard is bad for the flavor and texture; it does nothing for rancidity; and in a low acidity environment like soup, some foodborne pathogens don't much care if you boil them.