A pot of earthworms tossed on a midwinter's eve
A pinch of ground leg of bear
A bucket of starlight burned at the winter solstice
An eggshell of moonbeams milked on a summer's eve when the swifts are flying
Turn into cupcakes, then fry in the cauldron with a bar of soap.
Induces small donkeys to turn into ballerinas, and makes village idiots eat until they burst.