What is a gastropub? These days, I’m not too sure. Early on, though, when a pub went from just serving beer to serving fanciful takes on traditional dishes, they were said to have morphed into a gastropub. Nowadays, the term gastropub is synonymous with establishments that serve high-end beer along with creatively thought out dishes. Whether they started out as just a pub…well, that’s no longer a requirement. Enter The Brilliant Ox, the latest gastropub to hit Oahu, in the old Pearl Ultra Lounge space in Ala Moana Center.