I'm not a very picky person, but mushrooms you will never ever ever see me voluntarily eat. Unless someone cooks them up for dinner and it would be really obvious if they were left on my plate.
I hate mushrooms with a passion. That's really all I won't eat.
1. Any process food that uses Soy as a substitute ingredient.
2. An overcooked steak with Heinz 57
3. Any fast food - that doesn't mean I don't eat it... just, I could certainly live without it!