Soup Swamps (5e Environment)
From D&D Wiki
The Soup Swamps are swamps filled with soups of many varieties. Many creatures live in it and feed off of the soup. Soup Slimes and other oozy creatures reside here. Most of this area is covered in soup for water, but there are a few large land masses. Drinking the soup will heal 1d6 hit points. There is a man called Soup Man who owns the swamps, he kills most of the beasts within and sells the soup of the swamp.