There's 2 ways to make this recipe. The basic instructions are for a very fluid, syrup-y blood, good for fx that need to run thru tubes, and make puddles. If the blood needs to be applied to skin, use 4 times the dry ingredients and reduce the recipe on low-med. heat until it looks like grandma's-too-thick-to-eat-gravy. Keep in mind, it will be a bit thicker when it cools.
2L corn syrup
500mL chocolate syrup
2 cups water (1cup cold tap water, 1cup hot tap water)
2 tbsp (heaping) corn starch
3 tbsp (heaping) Coffee Mate (this is what makes it washable!!! don't know why.....it just does!!!))
15 mL red food colouring
3 mL yellow food colouring
Mix corn syrup and chocolate syrup together in large pot on high heat.
Use 1 cup cold water to rinse out syrup containers. Then dissolve corn starch in water. Add to pot.
Use 1 cup hot water to dissolve Coffee Mate. Add to pot.
Bring to a boil, stirring occasionally.
Mix in food colouring (I tend to use more than the recipe calls for).
When cooled, it can be stored in containers in the fridge for weeks at a time.
Makes approximately 3 litres, and is great on ice cream!"