From 1998, Cod: A Biography of the Fish that Changed the World.
A delightful read.
A baked or broiled chunk of Cod is a good test of a fine kitchen. Sad to say, Cod have been overfished to the extent that their historic populations may never be seen again - and I mean both the European and the western Atlantic populations.
Same issue with Haddock. Not sure I can tell the difference on a plate but a good Cod has thick flakes.
What about Fish 'n Chips? That means Cod or Haddock. For me, it has to be done right which means crispy but succulent, almost undercooked and fairly thick inside. It's easy to find terrible Fish 'n Chips and I have found lots of them. Worst ones in the UK, best one ever on the dock on Block Island. Malt vinegar, and beer are right with it.