schezuan sauce
Sauce made my McDonalds for a brief time with a sponsorship with the Disney movie Mulan. Its internet fame took off after an episode of Rick and Morty made multiple references to the discontinued sauce. It may come back in 2018 with the live action Mulan movie.
He's selling a packet of Schezuan Sauce on Ebay for $500.00.

I would kill myself just to taste one packet of Schezuan Sauce.