Sweet Porridge

A poor mother and her daughter are starved to death. One day the miserable girl meets an old lady in the woods who gifts her with a small magical pot which fills with sweet porridge each time they say "Cook, little pot, cook". The girl rushes to her mother and they can finally satisfy their hunger. The pot starts cooking. They start eating. However when they are done, the pot is still cooking. And they cannot make it stop. It starts spreading through the whole house, then the whole street, and then almost the whole village. Will they find the magical words to make it stop before they drown in porridge?