I was passing through Montevideo, Uruguay, and me and some folks at the hostel I was staying at were out trying a local restaurant. The guy who owned the place saw we were tourists and said he wanted to treat us to a local specialty, and so brought out... something. It was something like animal bits, chunks of fat, and who knows what else all suspended in a hard gelatin. It was truly vile, and I swear it had bits of hair in it as well. To be polite we all tried a small bit, and then got the heck out of there as quick as we could.

To this day I can't tell if he was sincere, or if he really hated tourists and gave us the contents of his dish trap. Googling has turned up nothing, but thankfully our politeness didn't extend to actually finishing the awful thing.