My chemistry teacher once made salmiak as a demonstration. The only experiment we were ever allowed to taste and quite cool to look at too.

If you are really really curious, you can find a phlebotomist that is game and use your own blood. This is the most ethical way to get some cooking blood and it can be done. (For proof see article)

https://www.vice.com/en/article/i-made-meringues-out-of-my-own-blood-and-ate-them/