The Magic Porridge Pot

"Sweet Porridge" (German: Der süße Brei), often known in English under the title of "The Magic Porridge Pot", is a folkloric German fairy tale recorded by the Brothers Grimm, as tale number 103 in Grimm's Fairy Tales, in the 19th century. It is Aarne–Thompson–Uther type 565, the magic mill.

A little girl is given a magic porridge pot, but one day when her mother forgets to stop it cooking, the whole town is soon filled with porridge!