Speaking of blood, it reminded me of the True Blood series. With regard to the advice that the internet gives, you have to investigate very well, since not everything that glitters is gold. To give color to food, especially pasta, I use beetroot, making a kind of sauce, which by the way is very good. Saludos.
Ha, I used beetroot to color this pie aswell! It's a good way to add a nice color to your food :-)