Standing over a cauldron, tossing in snippets of this, portions of that - brewing up a potion, a recipe in a cauldron. You imagine them, sisters three, over a large smoky steaming cauldron, aged, gnarled and bent - Shakespeare's Three Witches. Or perhaps you imagine a younger more contemporary potion maker - young Hermione sitting, small cauldron inher lap, brewing Polyjuice Potion in Moaning Myrtle's bathroom. (I DID just get back from vacation to the Wizarding World of Harry Potter in Orlando...)