Formula 86 - Delayed Action Mouse Maker

How it works: 
It turns children into mice, but not instantly. The formula kicks in at a specified time. Useful if you want to lose your tracks before it happens.

Instructions:

• Boil the wrong end of a telescope until it softens, for about 21 hours(helps with the shrinking)
• Fry 45 mouse tails in hair oil
• Simmer the 45 tail-less mice in frog juice for 1 hour
• Take an alarm clock, set it at the time you want the formula to kick in, then roast it in the oven until it's crisp and tender
• Mix everything together and add a gruntle's egg
• Add the claw of a crabcruncher, the beak of a blabbersnitch, the snout of a globbersquirt, the tongue of a catspringer

Serve:

• Add one drop into a chocolate bar or a candy
• The ingredients above are enough for 1000 portions

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Source: Text adapted from The Witches, by Roald Dahl, video from the movie The Witches (1990)