Credits: This recipe is inspired by horror- sci-fi Troma film director, Lloyd Kaufman's recipe in his book "Make Your Own Damn Movie." Unfortunately his didn't do it for me so, thanks Lloyd, I had to Make My Own Damn Fake Blood recipe too.
Step 1: Ingredients
Food Coloring : Red and Blue
LIGHT Karo (or other brand) corn syrup
*optional measuring cup and spoons
Step 2: Coloring
You will need to drop in 50, yes fifty, drops of red. It takes a lot to lose the clear brightness of the food coloring. The blue is the special ingredient (thanks Lloyd). But be careful. Use only 1 or 2 drops of blue. It turns burgundy-blueberry pie filling looking quick and then you have to start over. So:
1 or 2 drops of Blue per 50 drops of Red.
Step 3: Adding Flour
I started with 1/2 tsp of flour, mixed it in and sprinkled more in until it was no longer clear but still syrupy.