The Pot of Soup is a huge cauldron that has a human flesh soup in it. It is located on the stove, at the Kitchen on the first floor of Derceto. it can be used to distract the group of Ghouls that are in the Dining Room, by placing the cauldron on the table. This saves health, time and ammunition. Other than that, it serves no purpose. You cannot eat it, if you try, the game will state that the soup has human flesh and Carnby refuses to eat.