1 Liter Corn Syrup
5 Liters Water
2 or 3 Tablespoons Red Food Coloring
1/2 Teaspoon Green Food Coloring (optional)
A slosh of milk

Preparation:

Get a large pail to mix this all together.
If you do not like the consistancy you can either thin it with more water, or thicken it with sugar or corn syrup. The exact amount of food coloring you require will depend on the brand you buy, so you may need to play around with the measurements.
If you make it too dark, just add more water again.
Adding some milk will reduce the translucent of the mixture (real blood isn’t see-thru, but if you want clear blood, leave the milk out of the recipe).
Don’t add too much milk or the blood will look pink!
The final product should splash like water, but be slightly shinier, and not soak into cloth quite the same way water does, leaving more of it on the outside of clothes so they look suitably bloodied.

NOTE: This will stain clothing, so don’t get it on anything important.

Watch The Video

How To Make Fake Blood

How to Make Fake Blood