View source for How to Thicken Fake Blood

For the Opera Masters 2016 production of Owen Wingrave the stage management team were required to thicken the fake blood for easier application to a cast members face. 

''You first need to buy a small packet of gelatine from a nearby supermarket.'' 

Step 1: Mix 1/3 water and 2/3 blood together in a bowl or cup 

Step 2: Heat up the liquid mixture in a microwave or on the hob ''(whichever you prefer)'' 

Step 3: Add small amounts of the gelatine crystal packet ''(about 1/4 - 1/2)'' to the liquid while constantly stirring with a spoon.  '''Do not add the whole packet!''' 

Step 4: Leaving in a refrigerator over night. Repeat this process if needed.