The Element Encyclopedia of Witchcraft: The Complete A-Z for the Entire Magical World - Judika Illes 2005

Witch’s Butter
Food and Drink

Not all witch’s food is edible, nor is it all really “food.” It was once a popular belief in Sweden that witches sent their cats out to steal food from neighbors, especially butter. According to legend, these witches’ cats once ate so much butter that they vomited it up on their way home. Thus the yellow bile that cats sometimes cough up is called “witch’s butter.”

See ANIMALS: Cats; DIVINE WITCH: Freya.