Double, double, toil and trouble, fire burn and cauldron bubble

Double, double, toil and trouble, fire burn and cauldron bubble

"Double, double, toil and trouble, fire burn and cauldron bubble" is a famous line from William Shakespeare's play Macbeth. The line is spoken by the three witches as they brew a potion in their cauldron. This incantation is one of the most iconic lines in all of Shakespeare's works and has become synonymous with witchcraft and the supernatural.