Foods you remember being delicious but are disgusting

[El Diablo]

So, some things you eat, after you eat them you feel super gross and realize how disgusting the food is and pledge never to eat that crap again. But then, after a while (a month, a few months, a year, two years, etc) you start to remember it as being incredibly delicious and get it again. And the first couple of bites are indeed delicious. Then you have some more and realize again how disgusting the stuff is.

My initial nominations:

Awesome Blossom
KFC chicken
Funyuns
McRib