They are enjoyed by adults who acquired that taste: https://en.m.wikipedia.org/wiki/Acquired_taste https://en.m.wikipedia.org/wiki/Acquired_taste For instance,

They are enjoyed by adults who acquired that taste: https://en.m.wikipedia.org/wiki/Acquired_taste https://en.m.wikipedia.org/wiki/Acquired_taste For instance, it would be really hard to find anyone, no matter how old, who enjoys surströmming or hákarl without having become acquitted with them.