I definitely experienced taste changes post-op - I didn't really believe it when I kept hearing about it pre-op, but it was something I learned first-hand
very quickly after surgery! There is absolutely no rhyme or reason to these taste changes - some people, like Kel, don't really experience them. Others experience LOTS of them. Different tastes change for different people (lots of us seem to lose our taste for sweet things) and they can change back and forth over time. It's crazy...
What changed for me? Let's see...
I actually liked Sugar Free Jell-O pre-op (the fruit flavors kept me from going insane during many stints of eating meat, meat, and more meat on the Atkins Diet

) but post-op, I despised it. Horrible chemical flavors. Now I won't touch it again to see if my tastes have changed back.
Broth? Smelled and tasted like wet dog after surgery (all right, so I haven't actually
tasted a wet dog, but I've smelled one, and the broth tasted the same as it smelled, that's all I can say

) so I have never tried it after my first week out. Just typing the word makes me shiver.
Eggs? Hated 'em pre-WLS unless mixed heavily with meat, cheese, and veggies in a quiche. Now, they're okay. Not great, but I don't loathe them the way I did pre-op.
Seafood and fish? Still hate them, in fact, they taste even worse to me now. Horrendous.
Beef? I was a total beef whore before surgery. Now, I don't like it (even ground beef) and avoid it as much as possible. Nasty.
Pork products? Was never a huge pork fan, but liked ham well enough, loved bacon and sausage, and would eat a nicely cooked pork chop once in a while before WLS. Now, all pork, including my beloved bacon, tastes skanky. Bleccch!
Poultry? Still fine, thank heavens.
Peanuts? Used to love them, now I hate them.
Blueberries? Used to hate them, now I love them.
Swiss cheese? Hate it now, although other cheeses are still fine.
Pei Wei's Mandarin Kung Pao chicken? I could have eaten it three meals a day pre-WLS and never have gotten tired of it. Now, I don't care for it. Don't hate it, but have tried it several times (no rice - just a little steamed chicken in the spicy soy chile sauce, with veggies) and have yet to enjoy it again. Conversely, the Pei Wei Spicy Korean chicken, which I used to dislike pre-op, is absolutely succulent - I could drink the sauce from a glass now!