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Fake Blood Recipes - Blender Blood

Amazing, realistic looking fake blood mixtures just in time for Halloween.

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What would Halloween be without a few gallons of fake blood? There are lots of recipes floating around, but the biggest complaint is that the fake blood looks nothing like real blood. No worries... Steve Spangler shares his favorite blender blood recipes. There's a science to making realistic looking fake blood, but like any good scientist, it takes a little experimentation.

  • Corn syrup
  • Water
  • Assorted food coloring
  • Cornstarch
  • Chocolate syrup
  • Tropical fruit punch (Hawaiian Fruit Punch works great)
  • Powdered cocoa
  • White towel


  • Homemade Fake Blood - Halloween Science
  • The Spangler Effect - Fake Blood Recipes Season 01 Episodes 40 - 41
  • Homemade Fake Blood - Cool Science Experiment
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VIDEO - Watch Steve's television segment on how to make the best fake blood in a kitchen blender. (3 min)

VIDEO - Watch a full episode from The Spangler Effect on how to make amazing fake blood. (18 min)

The recipes below are designed to give you the tools needed to make up your own recipe based on your particular application. Most of these recipes only require ingredients found at a grocery store and the final product is completely edible – just in case you need a little dribble of blood coming down the side of your mouth!

When you're mixing up a batch of fake blood, it's important to remember that what you see in the mixing bowl or blender is not what the blood will look like on your skin or dripped onto a piece of fabric. Real blood is not really red… it's reddish-brown. Real blood is not transparent or see-through. There's an opaque quality to real blood that you'll need to duplicate in your fake blood recipe.

One final word of warning… making fake blood is totally fun and can be very messy. Since the main color agent is a food-grade coloring, these fake blood recipes will likely stain anything and everything! Your hands will be a red mess at the end of your mad scientist mixing session, but don't worry. Mix up a small batch of OxiClean® and use it to wash your hands, your clothes and your friends' clothes. It does a great job of washing the stain right out.

Believe it or not, our secret tool for making great fake blood is the kitchen blender. Blending the ingredients saves time and helps cut down on the overall mess of making fake blood.

Corn Syrup Fake Blood

This is one of the most common recipes, but you’ll see that it doesn’t really look anything like blood. That’s okay… go ahead and make the batch because you’ll use the ingredients a little later.

  • 1 cup corn syrup (commonly sold as Karo Syrup)
  • 1 tablespoon water
  • 2 tablespoons of red food coloring
  • A few drops of green food coloring

Combine all of these ingredients in the blender and blend away for a few seconds. You can adjust the amount of green food coloring to make the blood a little more brownish-red in color. However, you’ll notice that the blood is a little too transparent.

Take the white towel test… drip a few drops of blood onto a white towel to see how realistic it looks.

The Cornstarch Secret

Cornstarch is a common thickening agent for gravies, pie filling, and other goodies. It’s also a great ingredient for fake blood because it adds a little opacity to the liquid.

  • Use the mixture of the corn syrup recipe above
  • 2 tablespoons of cornstarch

Place all of the ingredients in the blender and mix until the cornstarch dissolves. If the solution is too thick, add a tablespoon of water and blend the ingredients. Keep doing this until the blood is the perfect consistency.

Take the white towel test… drip a few drops of blood onto a white towel to see how realistic it looks.

The Chocolate Syrup Secret

In the days before color television, chocolate syrup was the perfect solution to the problem of making fake blood. On a black and white screen, chocolate syrup looked just like real blood. Even though times have changed, chocolate syrup is still an important ingredient in making great edible fake blood.

  • 1 cup corn syrup
  • 2 tablespoons water
  • 2 tablespoons of red food coloring
  • 1 tablespoon of chocolate syrup
  • 2 tablespoons of cornstarch

Mix all of the ingredients in the blender for a few seconds. Watch as the fake blood oozes down the inside wall of the blender to get a good idea of what it will really look like on the white towel. Each of the ingredients in this recipe adds its own special quality to the fake blood – thickness, color, and transparency.

Take the white towel test… drip a few drops of blood onto a white towel to see how realistic it looks.

The Best Fake Blood… So Far

This recipe combines everything you’ve learned so far about making fake blood and adds a few ingredients that pack a great punch (pun intended... as you’ll see below).

  • 1/2 cup Tropical fruit punch (Hawaiian Fruit Punch® works great)
  • 1 cup corn syrup
  • 2 tablespoons of red food coloring
  • 1 tablespoon of chocolate syrup
  • 2 tablespoons of cornstarch
  • 1 tablespoon of powdered cocoa

Combine all of the ingredients in the blender and mix for 10 seconds. Since different brands of fruit punch vary in color, you’ll need to use your vast experience in making fake blood to tweak the recipe to arrive at your perfect batch of fake blood.

Some fake blood connoisseurs recommend a cup of coffee in place of the fruit punch. You may need to reduce (or eliminate) the amount of chocolate syrup and powdered cocoa used in the recipe. Remember, it’s all about experimentation!

Take the white towel test… drip a few drops of blood onto a white towel to see how realistic it looks. Or better yet... roll up your sleeve and drip a little on your arm if you run into a neighbor!

How Does It Work?

Take a moment to see how the variables work as you adjust your mixtures...

  • Corn syrup is used to thicken the liquid.
  • Cornstarch is used to make the liquid less transparent.
  • Chocolate syrup and powdered cocoa darken the blood, turning it reddish-brown, and add depth to the color.
  • It may be necessary to add a few drops of green food coloring to change the color ever so slightly to the brown side. Mixing green and red makes brown and a few drops can do the trick.

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