Hey HS84, welcome to BL!
Unfortunately nobody here can tell you what that is with any certainty, although I'm sure many have some thoughts.
So we try not to lets folks ID drugs from pictures here because it can often be anything, and so could lead to a false sense of security in taking something wrongly identified.
The use of drug testing services would be your usual first stop when you want to know what you have, but in this case you just have some burnt crud on tin foil and there's really not much point in trying to get that tested.
I'm afraid I'll have to close this thread though.
Best of luck,
CFC