Okay campers, it's payback time!
Several of you have posted pix of really obscure or hard to guess stuff.
I defy anyone to guess what this is.
I will identify the material in the photograph only after I have received sufficient pleas and begs for mercy.
In the unlikely event that one of you is sufficiently perspicacious or persistent enough to actually triumph, I shall eat humble pie and reward you appropriately.
Let the games begin. What is this stuff?