Make Ectoplasm Slime for Halloween


Make Ectoplasm Slime for Halloween
Ectoplasm Slime
Ectoplasm Slime (Anne Helmenstine)

If you’re familiar with the Ghostbusters movies, you know about ectoplasm and ghosts. It’s the viscous supernatural goo associated with spirits manifesting in the living world. Unless you have a pet poltergeist, you’ll need to make your own ectoplasm for haunted houses and ghoul costumes. Fortunately, all it takes is a simple twist on an edible slime recipe to make the stuff:

Ectoplasm Slime Ingredients

  • 1 cup (8 ounces) water
  • 1 teaspoon soluble fiber (e.g., Metamucil)
  • food coloring (optional)

Fiber comes in both flavored and unflavored versions. Some of these products also contain color. The ectoplasm in the photo was made using orange Metamucil, with a drop of neon green food coloring. The unflavored version produces a translucent uncolored slime.

Let’s Make Ectoplasm!

Making ectoplasm slime is easy:

If you don't add coloring, your slime will be ghostly and transparent.  (Steve Jurvetson)
If you don’t add coloring, your slime will be ghostly and transparent. (Steve Jurvetson)
  1. In a microwave-safe bowl, stir together the fiber and water.
  2. Microwave the mixture on high power for 3 minutes.
  3. Stir your ectoplasm and then heat it on high for another 3 minutes.
  4. Check the consistency of the slime. If it is too liquid-y, microwave it for another minute, check it, and then either call it good or continue cooking for 1-3 minutes until you get the consistency you want.
  5. Add a drop or two of food coloring. You can mix in the color completely, or not, depending on the desired appearance.
  6. If you aren’t using the ectoplasm right away, it can be stored in a sealed bag or container in the refrigerator up to a week before use. It will last even longer for decorating purposes, though I wouldn’t want to eat it past that point.

Tips

Make the ectoplasm slime glow in the dark by stirring in a bit of glow paint. Substitute ink from a fluorescent highlighter pen in place of water for a slime that glows under a black light. These variations are way cool, but not edible, so they should only use them on surfaces or dripping from clothes, not around your eyes or mouth.

More Slime Recipes To Try