Fish Baked in Banana Leaves

In Oaxaca, this dish is made with mojarra, a fish resembling ocean perch that I have never seen in this country. Luckily the wrapping technique works well with several fish that are widely available here. The natural oil in the banana leaf helps the fish steam inside the packet without drying out, and the fragrance of the leaves seems to have an affinity with fish. Parchment paper is a possible substitute, but frankly not a real equivalent.

If you can possibly find fresh h