Were there any foods you hated as a kid, but now love as an adult?

Bleu cheese

Olives, sweet potatoes and red beans.

sour cream

I wouldn't eat red beans or mustard greens until college.

Talking about a long time ago,
eggplant - love it now
pepperoni - believe it or not, when I was a kid, I used to remove the cheese and pepperoni from pizza and just eat the crust with whatever residual sauce was left on the crust.

Potato salad

Onions
Tomatoes
Sushi
Sardines
Calamari
Oysters
Brussel sprouts

Softshell crab.

Steak. Turns out the old man just didn't know how to cook it other than well done.

I was never a picky eater when I was a kid so the list is extremely short. Green olives is on that list. Hated them, and now I can tolerate them on occasion.