Mashed stomach of griffin
A bale of quince pinched when Halley's comet is in the sky
A bushel of hemlock borrowed at the spring equinox
2 cups of beaten egg of cow
Tap dance on, then fry in the cauldron on the night of a full moon.
Induces the nearest unbetrothed prince or princess to fall asleep for a hundred years, and makes young heroes on quests steal from the rich and give to the poor.