You probably don't know IPA. It can be an acquired taste just like Guinness. Some people don't like the first glasses or two but after the third they really like it. It's not so much the bitterness, it is that you can taste the individual hops. Pliny is a fine beer.
Sometimes even siblings can be very different. My sister never liked beer much (though she does like my homebrew) while when I stole my first clandestine sip at ... now nobody snitch about that ... age 6 I immediately liked it.
What about gravy or Satay sauce?