Frosting. I stopped liking it when I was about 13--just too sickly sweet. There are a couple types I like, but I can't seem to get them consistently. (So it annoys the heck out of me when my parents would go ahead and get a birthday cake for me, with no input from me...I don't want the thing custom-decorated! I want to be able to eat it!) Root beer too. I find most brands taste vaguely like cough syrup. Virgil's is pretty good, though. Sausage is another one. I just can't eat the sausage that shows up in most breakfast buffets any more. I stick with bacon!

The too-sweet thing, I guess, would apply to half the candy my grandmother would send in a giant box from the UK.

I have a lot that went the other way, though. Walnuts (puked after eating too many of them when I was five and I didn't touch them for 10 years!), fish, tea, salt and vinegar chips.