Shred the onion and chili pod. Remove burning seeds. Lightly grind the coriander seeds.
Pour onion, chili, coriander, and bay leaves with white wine vinegar and white dry wine. We put on fire and bring to a boil, do not cook, but immediately remove from the stove.
Rub the fish fillet with salt.
Fry the fish in vegetable oil on both sides for two minutes.
We transfer the fried fish fillets into a clean container with a rim, fill with hot onion marinade and refrigerate. Serve the Peruvian escabeche to the table.