Mojarra Frita Costeña con Plátano y Arroz

Start on the Costa Chica, the stretch of Pacific coast that runs from southern Guerrero into western Oaxaca. Cuajinicuilapa on the Guerrero side. Pinotepa Nacional and the lagoons of Chacahua and Corralero on the Oaxaca side. This is the home of Mexico's tercera raíz, the African root that colonial Mexico planted on this coast and then spent four hundred years pretending it could not see. La tercera raíz no es nota al pie. Es plato principal. This fish plate is everyday food here, what a fishing family eats when the boats come in.

The mojarra comes out of the lagoon, most often tilapia these days, and it goes into the fat whole: scored, salted, fried until the skin cracks and the fins go crisp enough to eat. Next to it, two things that tell you exactly where you are. Plátano macho maduro, fried in manteca until the edges caramelize black-gold. Plain white arroz blanco. And the salsa is built on chile costeño, the small fruity chile of this coast and nowhere else. Name it. Do not call it 'a dried chile.' On the Costa Chica the chile has a name and the name is costeño.

The frying is the African inheritance on the plate. The same habit that fries plantain across the Caribbean and West Africa fries it here, in manteca, without apology. La manteca es el sabor. Get the technique right and the rest takes care of itself. Dry the fish until it is truly dry. Score it to the bone. Bring the fat up to heat before the fish goes in, then leave it alone and let it crisp. No me vengas con atajos. There is no shortcut to a crackling skin.

I learned this plate in a palm-roof palapa outside Chacahua, from a cook who fried mojarra over a wood fire all afternoon and slid each one onto a speckled peltre plate without once checking a clock. She knew by the sound. You will get there too. Cada estado, su propia cocina, and this coast guards its own.