Blood

Here are a few blood recipes i found on http://www.exposure.co.uk/eejit/blood/blood.html
Lo-Cost Blood -
Add a few drops of red food colouring to the cheapest washing up liquid you can find. Add a drop of blue colouring or some coffee concentrate to create a more realistic colour. Produces a runny blood that has a slight tendency to foam. Great for those bucket of blood effects on the cheap. Washes off reasonably well but tastes foul if you accidently get it in your mouth.
Corn Syrup Blood -
This is the recipe that pretty much everyone uses, and there's a lot of variations so feel free to experiment.
16 oz. White corn syrup (Karo syrup - this is a US product, but adding golden syrup does the job just as well, alternatively just mix sugar and water and reduce on the stove until it becomes syrupy)
1 oz. red food coloring
1 oz. washing detergent
1 oz. water
Add a drop of blue food colouring to create a more realistic colour. Remove the washing up liquid if you want to make edible blood. Adding condensed milk makes it less transparent and more like real blood.
The blood is extremely sticky and can stain skin and clothes so makes sure its washed off quickly. Use a stain remover on clothes.

I think the second one seems the best, just got to buy the ingredients now!!!!