Monster Blood Activity

4.5 based on 2 ratings
Updated on Jan 15, 2014

This corn syrup-based fake blood recipe has been a staple on horror movie sets for decades. It's good and gross — and totally edible! If you’ve got any vampires, zombies or monsters in your house this Halloween, skip the store and cook up a batch of monster blood for full spooky effect.

What You Need:

  • 1 cup corn syrup
  • 1 tablespoon water
  • 2 tablespoons of red food coloring
  • A few drops of green food coloring
  • A few drops of blue food coloring
  • Chocolate syrup
  • Old T-shirt

What You Do:

  1. First, prepare your work area: Though monster blood is non-toxic and kid-safe, this recipe can stain clothes and may leave faint stains on skin. Put down some newspaper and cover your kid in an old T-shirt to protect clothes and any skin you want to keep clean.
  2. Slowly pour the corn syrup into a medium-sized mixing bowl. Careful – corn syrup can be super-sticky. Keep some hot water and paper towels nearby to clean any excess off hands.
  3. Add the water and stir with a large spoon. The mixture will be thick, so take your time!
  4. Add the food coloring to the mixture. You may want to add a little more or a little less to the mixture to get the color you’re looking for.
  5. You’ve just made a classic monster-movie blood base! Try dipping a cotton swab in it and drawing scary details onto your face and arms to add some frightening finishing touches to your costume.

There are several other ingredients you can add to your monster blood to change the “look” of it – try plopping in some peanut butter, molasses, coffee creamer or cocoa mix to experiment with texture and color. See how each ingredient changes the level of “Ew, gross!” Monster blood is also a great idea for scary birthday parties!

Jody Amable is an Assistant Editor at She has previously worked as a camp counselor, and spent her college years hosting birthday parties for kids at the Bay Area Discovery Museum. She has a degree in Journalism from San Francisco State University and writes for local blogs, magazines and weeklies in her spare time.

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