Most of the stuff I disliked as a kid and like now turned out to be just bad cooking or was canned and nasty. Mummy was a master at burning and drying out to shoe leather any type of meat product. Really I don't think there was a meal she couldn't make unpalletable in one way or another! I remember when we got older my sister and I snuck a steak out of the freezer a couple of times and broiled it to perfection knowing if she got hold of it, it could have been sold as rawhide for Bowser.
Other stuff I still dislike - cucumbers, raw onions, bell peppers etc. Also there are things I liked as a kid that I don't like now. Like soft white grocery bread, hot dogs, all those HoHo, DingDong, Twinkie and Snowball things. I use to love Pepsi, OMG I bet I couldn't drink one swallow of that stuff now.