A skull of sage chewed after an extravagant tea
A pinch of ground brains of tiger
Crushed feathers of griffin
1 tsp burnt tail of pigeon
2 tsp ground udder of newt
Turn into cupcakes, then fry in the cauldron with yesterday's leftovers.
Induces witches to transform into singing toads, and makes the nearest unbetrothed prince or princess dance until they wear out their shoes.