When I first had Campari, it was mixed with orange juice. The combination of sweet and bitter was wonderful. I won’t have it that way anymore, because oj just has too much sugar (natural fruit sugar, yes, but sugar nonetheless). But Campari haters might want to add just a little oj to their Campari soda and try again.
These are exactly the 2 examples I thought of when I saw the thread title.
For egg creams, I blame that Harriet the Spy. She was the one (OK, it was actually Louise Fitzhugh, but still…) who introduced me to the concept. When I tried one, it wasn’t horrible, but it wasn’t special, either.